642123456807

Names of 642123456807

• Cardinal: 642123456807 can be written as Six hundred forty-two billion, one hundred twenty-three million, four hundred fifty-six thousand, eight hundred seven.

Scientific notation

• Scientific notation: 6.42123456807 × 10¹¹

Factors of 642123456807

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 70221

Divisors of 642123456807

• Number of divisors d(n): 80
• Complete list of divisors:
  1 3 7 21 31 41 49 93 123 147 217 287 343 651 861 1029 1271 1519 2009 2401 3813 4557 6027 7203 8897 10633 14063 26691 31899 42189 62279 70139 74431 98441 186837 210417 223293 295323 435953 490973 1307859 1472919 2174309 2875699 3051671 3436811 6522927 8627097 9155013 10310433 15220163 20129893 24057677 45660489 60389679 72173031 89146669 106541141 140909251 168403739 267440007 319623423 422727753 505211217 624026683 745787987 986364757 1872080049 2237363961 2959094271 4368186781 5220515909 6904553299 13104560343 15661547727 20713659897 30577307467 91731922401 214041152269 642123456807
• Sum of all divisors σ(n): 1056180464640
• Sum of proper divisors (its aliquot sum) s(n): 414057007833
• 642123456807 is a deficient number, because the sum of its proper divisors (414057007833) is less than itself. Its deficiency is 228066448974

Bases of 642123456807

• Binary: 1001010110000001100010100110000100100111₂
• Hexadecimal: 0x95818A6127
• Base-36: 86ZJQ693

Squares and roots of 642123456807

• 642123456807 squared (642123456807²) is 412322533781771194635249
• 642123456807 cubed (642123456807³) is 264761970711371954062324101371189943
• The square root of 642123456807 is 801326.0614799695
• The cube root of 642123456807 is 8627.2591740465

Scales and comparisons

• 642,123,456,807 seconds is equal to 20,417 years, 28 weeks, 10 hours, 53 minutes, 27 seconds.
• To count from 1 to 642,123,456,807 would take you about forty thousand, eight hundred thirty-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 642123456807 cubic inches would be around 718.9 feet tall.

Recreational maths with 642123456807

• 642123456807 backwards is 708654321246
• The number of decimal digits it has is: 12
• The sum of 642123456807's digits is 48
• More coming soon!