21280142927942

Names of 21280142927942

• Cardinal: 21280142927942 can be written as Twenty-one trillion, two hundred eighty billion, one hundred forty-two million, nine hundred twenty-seven thousand, nine hundred forty-two.

Scientific notation

• Scientific notation: 2.1280142927942 × 10¹³

Factors of 21280142927942

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 33528608

Divisors of 21280142927942

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 29 31 58 62 353 706 899 1798 10237 10943 20474 21886 317347 634694 33528193 67056386 972317597 1039373983 1944635194 2078747966 11835452129 23670904258 30141845507 60283691014 343228111741 366899015999 686456223482 733798031998 10640071463971 21280142927942
• Sum of all divisors σ(n): 34182664346880
• Sum of proper divisors (its aliquot sum) s(n): 12902521418938
• 21280142927942 is a deficient number, because the sum of its proper divisors (12902521418938) is less than itself. Its deficiency is 8377621509004

Bases of 21280142927942

• Binary: 100110101101010101011010111000010100001000110₂
• Hexadecimal: 0x135AAB5C2846
• Base-36: 7JJYNNUBQ

Squares and roots of 21280142927942

• 21280142927942 squared (21280142927942²) is 452844483033639916604355364
• 21280142927942 cubed (21280142927942³) is 9636595323085863477410731458060413180888
• The square root of 21280142927942 is 4613040.5296227347
• The cube root of 21280142927942 is 27711.3816859609

Scales and comparisons

• 21,280,142,927,942 seconds is equal to 676,642 years, 37 weeks, 3 days, 13 hours, 19 minutes, 2 seconds.
• To count from 1 to 21,280,142,927,942 would take you about one million, six hundred ninety-one thousand, six hundred six 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 21280142927942 cubic inches would be around 2309.3 feet tall.

Recreational maths with 21280142927942

• 21280142927942 backwards is 24972924108212
• The number of decimal digits it has is: 14
• The sum of 21280142927942's digits is 53
• More coming soon!