421 is a prime number. Like all primes (except two), it is an odd number.
Prime factorization of 421:
See below for interesting mathematical facts about the number 421 from the Numbermatics database.
Names of 421
- Cardinal: 421 can be written as Four hundred twenty-one.
- Scientific notation: 4.21 × 102
Factors of 421
Divisors of 421
Bases of 421
- Binary: 1101001012
- Hexadecimal: 0x1A5
- Base-36: BP
Squares and roots of 421
Scales and comparisonsHow big is 421?
- 421 seconds is equal to 7 minutes, 1 second.
To count from 1 to 421 would take you about three minutes.
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 421 cubic inches would be around 0.6 feet tall.
Recreational maths with 421
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Cite this page
"Number 421 - Facts about the integer". Numbermatics.com. 2021. Web. 14 May 2021.
Numbermatics. (2021). Number 421 - Facts about the integer. Retrieved 14 May 2021, from https://numbermatics.com/n/421/
Numbermatics. 2021. "Number 421 - Facts about the integer". https://numbermatics.com/n/421/
The information we have on file for 421 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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