642 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.
Prime factorization of 642:
2 × 3 × 107
See below for interesting mathematical facts about the number 642 from the Numbermatics database.
Names of 642
- Cardinal: 642 can be written as Six hundred forty-two.
- Scientific notation: 6.42 × 102
Factors of 642
Divisors of 642
Bases of 642
- Binary: 10100000102
- Hexadecimal: 0x282
- Base-36: HU
Squares and roots of 642
Scales and comparisonsHow big is 642?
- 642 seconds is equal to 10 minutes, 42 seconds.
To count from 1 to 642 would take you about five 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 642 cubic inches would be around 0.7 feet tall.
Recreational maths with 642
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"Number 642 - Facts about the integer". Numbermatics.com. 2020. Web. 2 April 2020.
Numbermatics. (2020). Number 642 - Facts about the integer. Retrieved 2 April 2020, from https://numbermatics.com/n/642/
Numbermatics. 2020. "Number 642 - Facts about the integer". https://numbermatics.com/n/642/
The information we have on file for 642 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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