642420
642,420 is an even composite number composed of five prime numbers multiplied together.
642420 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 642420:
22 × 32 × 5 × 43 × 83
(2 × 2 × 3 × 3 × 5 × 43 × 83)See below for interesting mathematical facts about the number 642420 from the Numbermatics database.
Names of 642420
- Cardinal: 642420 can be written as Six hundred forty-two thousand, four hundred twenty.
Scientific notation
- Scientific notation: 6.4242 × 105
Factors of 642420
Divisors of 642420
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 18 20 30 36 43 45 60 83 86 90 129 166 172 180 215 249 258 332 387 415 430 498 516 645 747 774 830 860 996 1245 1290 1494 1548 1660 1935 2490 2580 2988 3569 3735 3870 4980 7138 7470 7740 10707 14276 14940 17845 21414 32121 35690 42828 53535 64242 71380 107070 128484 160605 214140 321210 642420
- Sum of all divisors σ(n): 2018016
- Sum of proper divisors (its aliquot sum) s(n): 1375596
- 642420 is an abundant number, because the sum of its proper divisors (1375596) is greater than itself. Its abundance is 733176
Bases of 642420
- Binary: 100111001101011101002
- Hexadecimal: 0x9CD74
- Base-36: DRP0
Squares and roots of 642420
- 642420 squared (6424202) is 412703456400
- 642420 cubed (6424203) is 265128954460488000
-
The
square root of 642420 is 801.5110729117 -
The
cube root of 642420 is 86.2858703981
Scales and comparisons
How big is 642420?- 642,420 seconds is equal to 1 week, 10 hours, 27 minutes.
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To count from 1 to 642,420 would take you about ten 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 642420 cubic inches would be around 7.2 feet tall.
Recreational maths with 642420
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The information we have on file for 642420 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!
Keywords: Divisors of 642420, math, Factors of 642420, curriculum, school, college, exams, university, Prime factorization of 642420, STEM, science, technology, engineering, physics, economics, calculator, six hundred forty-two thousand, four hundred twenty.