642121398
642,121,398 is an even composite number composed of five prime numbers multiplied together.
642121398 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 642121398:
2 × 33 × 109 × 127 × 859
(2 × 3 × 3 × 3 × 109 × 127 × 859)See below for interesting mathematical facts about the number 642121398 from the Numbermatics database.
Names of 642121398
- Cardinal: 642121398 can be written as Six hundred forty-two million, one hundred twenty-one thousand, three hundred ninety-eight.
Scientific notation
- Scientific notation: 6.42121398 × 108
Factors of 642121398
Divisors of 642121398
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 6 9 18 27 54 109 127 218 254 327 381 654 762 859 981 1143 1718 1962 2286 2577 2943 3429 5154 5886 6858 7731 13843 15462 23193 27686 41529 46386 83058 93631 109093 124587 187262 218186 249174 280893 327279 373761 561786 654558 747522 842679 981837 1685358 1963674 2528037 2945511 5056074 5891022 11891137 23782274 35673411 71346822 107020233 214040466 321060699 642121398
- Sum of all divisors σ(n): 1453056000
- Sum of proper divisors (its aliquot sum) s(n): 810934602
- 642121398 is an abundant number, because the sum of its proper divisors (810934602) is greater than itself. Its abundance is 168813204
Bases of 642121398
- Binary: 1001100100010111111110101101102
- Hexadecimal: 0x2645FEB6
- Base-36: AMAW1I
Squares and roots of 642121398
- 642121398 squared (6421213982) is 412319889769474404
- 642121398 cubed (6421213983) is 264759424041980802021696792
-
The
square root of 642121398 is 25340.1144038461 -
The
cube root of 642121398 is 862.7249953659
Scales and comparisons
How big is 642121398?- 642,121,398 seconds is equal to 20 years, 21 weeks, 4 days, 23 hours, 3 minutes, 18 seconds.
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To count from 1 to 642,121,398 would take you about thirty years!
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 642121398 cubic inches would be around 71.9 feet tall.
Recreational maths with 642121398
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