21042021
21,042,021 is an odd composite number composed of four prime numbers multiplied together.
21042021 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21042021:
3 × 73 × 112 × 132
(3 × 7 × 7 × 7 × 11 × 11 × 13 × 13)See below for interesting mathematical facts about the number 21042021 from the Numbermatics database.
Names of 21042021
- Cardinal: 21042021 can be written as Twenty-one million, forty-two thousand and twenty-one.
Scientific notation
- Scientific notation: 2.1042021 × 107
Factors of 21042021
Divisors of 21042021
- Number of divisors d(n): 72
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Complete list of divisors:
1 3 7 11 13 21 33 39 49 77 91 121 143 147 169 231 273 343 363 429 507 539 637 847 1001 1029 1183 1573 1617 1859 1911 2541 3003 3549 3773 4459 4719 5577 5929 7007 8281 11011 11319 13013 13377 17787 20449 21021 24843 33033 39039 41503 49049 57967 61347 77077 91091 124509 143143 147147 173901 231231 273273 429429 539539 637637 1002001 1618617 1912911 3006003 7014007 21042021
- Sum of all divisors σ(n): 38942400
- Sum of proper divisors (its aliquot sum) s(n): 17900379
- 21042021 is a deficient number, because the sum of its proper divisors (17900379) is less than itself. Its deficiency is 3141642
Bases of 21042021
- Binary: 10100000100010011011001012
- Hexadecimal: 0x1411365
- Base-36: CJ04L
Squares and roots of 21042021
- 21042021 squared (210420212) is 442766647764441
- 21042021 cubed (210420213) is 9316705100358970575261
-
The
square root of 21042021 is 4587.1582706507 -
The
cube root of 21042021 is 276.0763152755
Scales and comparisons
How big is 21042021?- 21,042,021 seconds is equal to 34 weeks, 5 days, 13 hours, 21 seconds.
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To count from 1 to 21,042,021 would take you about seven hours!
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 21042021 cubic inches would be around 23 feet tall.
Recreational maths with 21042021
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The information we have on file for 21042021 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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