642129314448154221

Names of 642129314448154221

• Cardinal: 642129314448154221 can be written as Six hundred forty-two quadrillion, one hundred twenty-nine trillion, three hundred fourteen billion, four hundred forty-eight million, one hundred fifty-four thousand, two hundred twenty-one.

Scientific notation

• Scientific notation: 6.42129314448154221 × 10¹⁷

Factors of 642129314448154221

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 352279740

Divisors of 642129314448154221

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 9 13 39 61 97 117 183 291 549 793 873 1261 2379 2633 3783 5917 7137 7899 11349 17751 23697 34229 53253 76921 102687 160613 230763 255401 308061 481839 692289 766203 1445517 2087969 2298609 3320213 6263907 9960639 15579461 18791721 29881917 46738383 140215149 202532993 352276933 607598979 1056830799 1822796937 3170492397 4579600129 13738800387 21488892913 34170862501 41216401161 64466678739 102512587503 193400036217 279355607869 307537762509 444221212513 838066823607 927545164589 1332663637539 2084422612561 2514200470821 2782635493767 3997990912617 6253267837683 8347906481301 12058087139657 18759803513049 27097493963293 36174261418971 56580255039929 81292481889879 89971880965133 108522784256913 169740765119787 243877445669637 269915642895399 509222295359361 735543315519077 809746928686197 1169634452546729 2206629946557231 3508903357640187 5488284738873113 6619889839671693 10526710072920561 16464854216619339 49394562649858017 71347701605350469 214043104816051407 642129314448154221
• Sum of all divisors σ(n): 1026098686465917792
• Sum of proper divisors (its aliquot sum) s(n): 383969372017763571
• 642129314448154221 is a deficient number, because the sum of its proper divisors (383969372017763571) is less than itself. Its deficiency is 258159942430390650

Bases of 642129314448154221

• Binary: 100011101001010011010011010110010111100011000001111001101101₂
• Hexadecimal: 0x8E94D35978C1E6D
• Base-36: 4VMNUEO6UC19

Squares and roots of 642129314448154221

• 642129314448154221 squared (642129314448154221²) is 412330056473656521194710993800116841
• 642129314448154221 cubed (642129314448154221³) is 264769216489797776280223776154712974977804266587335861
• The square root of 642129314448154221 is 801329716.4389663523
• The cube root of 642129314448154221 is 862728.5407441403

Scales and comparisons

• 642,129,314,448,154,221 seconds is equal to 20,417,725,963 years, 3 weeks, 4 days, 8 hours, 10 minutes, 21 seconds.
• To count from 1 to 642,129,314,448,154,221 would take you about sixty-one billion, two hundred fifty-three million, one hundred seventy-seven thousand, eight hundred eighty-nine 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 642129314448154221 cubic inches would be around 71894 feet tall.

Recreational maths with 642129314448154221

• 642129314448154221 backwards is 122451844413921246
• The number of decimal digits it has is: 18
• The sum of 642129314448154221's digits is 63
• More coming soon!