642121101687858

Names of 642121101687858

• Cardinal: 642121101687858 can be written as Six hundred forty-two trillion, one hundred twenty-one billion, one hundred one million, six hundred eighty-seven thousand, eight hundred fifty-eight.

Scientific notation

• Scientific notation: 6.42121101687858 × 10¹⁴

Factors of 642121101687858

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1808446

Divisors of 642121101687858

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 6 13 26 39 78 169 338 507 1014 474857 949714 1333571 1424571 2667142 2849142 4000713 6173141 8001426 12346282 17336423 18519423 34672846 37038846 52009269 80250833 104018538 160501666 225373499 240752499 450746998 481504998 676120497 1352240994 633255524347 1266511048694 1899766573041 3799533146082 8232321816511 16464643633022 24696965449533 49393930899066 107020183614643 214040367229286 321060550843929 642121101687858
• Sum of all divisors σ(n): 1390633102776096
• Sum of proper divisors (its aliquot sum) s(n): 748512001088238
• 642121101687858 is an abundant number, because the sum of its proper divisors (748512001088238) is greater than itself. Its abundance is 106390899400380

Bases of 642121101687858

• Binary: 10010010000000000101111000001010110011110000110010₂
• Hexadecimal: 0x24801782B3C32
• Base-36: 6BM2D0VAR6

Squares and roots of 642121101687858

• 642121101687858 squared (642121101687858²) is 412319509232828474056464628164
• 642121101687858 cubed (642121101687858³) is 264759057515980758087161931711754934763632712
• The square root of 642121101687858 is 25340108.5571443043
• The cube root of 642121101687858 is 86272.4862662091

Scales and comparisons

• 642,121,101,687,858 seconds is equal to 20,417,464 years, 42 weeks, 5 days, 11 hours, 4 minutes, 18 seconds.
• To count from 1 to 642,121,101,687,858 would take you about fifty-one million, forty-three thousand, six hundred sixty-two 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 642121101687858 cubic inches would be around 7189.4 feet tall.

Recreational maths with 642121101687858

• 642121101687858 backwards is 858786101121246
• The number of decimal digits it has is: 15
• The sum of 642121101687858's digits is 60
• More coming soon!