421

421 - natural number. Article “421” in Japanese Wikipedia has 2.5 points for quality (as of July 1, 2026). The article contains 0 references and 3 sections.

This article has the best quality in Russian Wikipedia. However, this article is the most popular in Japanese version.

Since the creation of article “421”, its content was written by 16 registered users of Japanese Wikipedia and edited by 76 registered Wikipedia users in all languages.

The article is cited 32 times in Japanese Wikipedia and cited 5629 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Japanese): #22054 in November 2017
• Global: #70928 in January 2017

The highest popularity rank from 2008:

• Local (Japanese): #84569 in April 2015
• Global: #766837 in April 2015

There are 13 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	Russian (ru) 421 (число)		31.9828
2	Swedish (sv) 421 (tal)		25.741
3	Uzbek (uz) 421 (son)		19.0104
4	Korean (ko) 421		15.8928
5	Czech (cs) 421 (číslo)		5.0604
6	Dutch (nl) 421 (getal)		4.8528
7	Italian (it) 421 (numero)		3.8169
8	Japanese (ja) 421		2.5485
9	Urdu (ur) 421 (عدد)		1.6266
10	Hungarian (hu) 421 (szám)		1.4566

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The following table shows the most popular language versions of the article.

The most popular language versions of the article "421" in all the time

#	Language	Popularity award	Relative popularity
1	Japanese (ja) 421		35 086
2	Russian (ru) 421 (число)		11 820
3	Korean (ko) 421		6 808
4	Italian (it) 421 (numero)		6 011
5	Czech (cs) 421 (číslo)		2 907
6	Hungarian (hu) 421 (szám)		2 292
7	Urdu (ur) 421 (عدد)		968
8	Malay (ms) 421 (nombor)		706
9	Swedish (sv) 421 (tal)		694
10	Vietnamese (vi) 421 (số)		608

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The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "421" in June 2026

#	Language	Popularity award	Relative popularity
1	Japanese (ja) 421		44
2	Russian (ru) 421 (число)		31
3	Korean (ko) 421		23
4	Italian (it) 421 (numero)		11
5	Swedish (sv) 421 (tal)		9
6	Czech (cs) 421 (číslo)		8
7	Dutch (nl) 421 (getal)		8
8	Hungarian (hu) 421 (szám)		5
9	Urdu (ur) 421 (عدد)		4
10	Malay (ms) 421 (nombor)		3

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The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "421" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	Japanese (ja) 421		16
2	Russian (ru) 421 (число)		15
3	Italian (it) 421 (numero)		14
4	Swedish (sv) 421 (tal)		5
5	Hungarian (hu) 421 (szám)		4
6	Dutch (nl) 421 (getal)		4
7	Czech (cs) 421 (číslo)		3
8	Korean (ko) 421		3
9	Uzbek (uz) 421 (son)		3
10	Vietnamese (vi) 421 (số)		3

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The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "421" with the highest AI in June 2026

#	Language	AI award	Relative AI
1	Czech (cs) 421 (číslo)		0
2	Basque (eu) Laurehun eta hogeita bat		0
3	Hungarian (hu) 421 (szám)		0
4	Italian (it) 421 (numero)		0
5	Japanese (ja) 421		0
6	Korean (ko) 421		0
7	Malay (ms) 421 (nombor)		0
8	Dutch (nl) 421 (getal)		0
9	Russian (ru) 421 (число)		0
10	Swedish (sv) 421 (tal)		0

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The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "421" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	Urdu (ur) 421 (عدد)		3 543
2	Uzbek (uz) 421 (son)		911
3	Vietnamese (vi) 421 (số)		599
4	Hungarian (hu) 421 (szám)		239
5	Swedish (sv) 421 (tal)		162
6	Czech (cs) 421 (číslo)		103
7	Japanese (ja) 421		32
8	Korean (ko) 421		14
9	Italian (it) 421 (numero)		11
10	Dutch (nl) 421 (getal)		6

More...

#	Language	Value
cs	Czech 421 (číslo)
eu	Basque Laurehun eta hogeita bat
hu	Hungarian 421 (szám)
it	Italian 421 (numero)
ja	Japanese 421
ko	Korean 421
ms	Malay 421 (nombor)
nl	Dutch 421 (getal)
ru	Russian 421 (число)
sv	Swedish 421 (tal)
ur	Urdu 421 (عدد)
uz	Uzbek 421 (son)
vi	Vietnamese 421 (số)

Best Rank

Japanese: #84569 04.2015

Global: #766837 04.2015

Best Rank

Japanese: #22054 11.2017

Global: #70928 01.2017

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In Japanese Wikipedia the most popular articles on that day were: 橋本愛 (1996年生), 超ときめき♡宣伝部, 塩貝健人, 鈴木彩艶, 泉里香, 谷口彰悟, 田中みな実, 佐野海舟, アーリング・ハーランド, 後藤輝樹.

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information