20121021404642

Names of 20121021404642

• Cardinal: 20121021404642 can be written as Twenty trillion, one hundred twenty-one billion, twenty-one million, four hundred four thousand, six hundred forty-two.

Scientific notation

• Scientific notation: 2.0121021404642 × 10¹³

Factors of 20121021404642

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 76930

Divisors of 20121021404642

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 29 58 239 478 6931 13862 34127 42533 68254 85066 989683 1233457 1979366 2466914 8156353 10165387 16312706 20330774 236534237 294796223 473068474 589592446 1451523691 2903047382 42094187039 84188374078 346914162149 693828324298 10060510702321 20121021404642
• Sum of all divisors σ(n): 31354567603200
• Sum of proper divisors (its aliquot sum) s(n): 11233546198558
• 20121021404642 is a deficient number, because the sum of its proper divisors (11233546198558) is less than itself. Its deficiency is 8887475206084

Bases of 20121021404642

• Binary: 100100100110011001010010101010101010111100010₂
• Hexadecimal: 0x124CCA5555E2
• Base-36: 74RGWMUW2

Squares and roots of 20121021404642

• 20121021404642 squared (20121021404642²) is 404855502366061522699148164
• 20121021404642 cubed (20121021404642³) is 8146106228894613773929403557984155377288
• The square root of 20121021404642 is 4485646.1524112667
• The cube root of 20121021404642 is 27198.8165415753

Scales and comparisons

• 20,121,021,404,642 seconds is equal to 639,786 years, 12 weeks, 4 days, 4 hours, 24 minutes, 2 seconds.
• To count from 1 to 20,121,021,404,642 would take you about one million, five hundred ninety-nine thousand, four hundred sixty-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 20121021404642 cubic inches would be around 2266.6 feet tall.

Recreational maths with 20121021404642

• 20121021404642 backwards is 24640412012102
• 20121021404642 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 20121021404642's digits is 29
• More coming soon!