121428990
121,428,990 is an even composite number composed of five prime numbers multiplied together.
121428990 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 121428990:
2 × 33 × 5 × 43 × 10459
(2 × 3 × 3 × 3 × 5 × 43 × 10459)See below for interesting mathematical facts about the number 121428990 from the Numbermatics database.
Names of 121428990
- Cardinal: 121428990 can be written as One hundred twenty-one million, four hundred twenty-eight thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 1.2142899 × 108
Factors of 121428990
Divisors of 121428990
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 5 6 9 10 15 18 27 30 43 45 54 86 90 129 135 215 258 270 387 430 645 774 1161 1290 1935 2322 3870 5805 10459 11610 20918 31377 52295 62754 94131 104590 156885 188262 282393 313770 449737 470655 564786 899474 941310 1349211 1411965 2248685 2698422 2823930 4047633 4497370 6746055 8095266 12142899 13492110 20238165 24285798 40476330 60714495 121428990
- Sum of all divisors σ(n): 331372800
- Sum of proper divisors (its aliquot sum) s(n): 209943810
- 121428990 is an abundant number, because the sum of its proper divisors (209943810) is greater than itself. Its abundance is 88514820
Bases of 121428990
- Binary: 1110011110011011011111111102
- Hexadecimal: 0x73CDBFE
- Base-36: 20AN7I
Squares and roots of 121428990
- 121428990 squared (1214289902) is 14744999612420100
- 121428990 cubed (1214289903) is 1790470410486564198699000
-
The
square root of 121428990 is 11019.4822927395 -
The
cube root of 121428990 is 495.1925788787
Scales and comparisons
How big is 121428990?- 121,428,990 seconds is equal to 3 years, 44 weeks, 5 days, 10 hours, 16 minutes, 30 seconds.
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To count from 1 to 121,428,990 would take you about five 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 121428990 cubic inches would be around 41.3 feet tall.
Recreational maths with 121428990
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