121686128165420

Names of 121686128165420

• Cardinal: 121686128165420 can be written as One hundred twenty-one trillion, six hundred eighty-six billion, one hundred twenty-eight million, one hundred sixty-five thousand, four hundred twenty.

Scientific notation

• Scientific notation: 1.2168612816542 × 10¹⁴

Factors of 121686128165420

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2040

Divisors of 121686128165420

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 73 91 130 140 146 182 260 292 364 365 373 455 511 730 746 910 949 1022 1460 1492 1567 1820 1865 1898 2044 2555 2611 3134 3730 3796 4745 4849 5110 5222 6268 6643 7460 7835 9490 9698 10220 10444 10969 13055 13286 15670 18980 19396 20371 21938 24245 26110 26572 27229 31340 33215 33943 40742 43876 48490 52220 54458 54845 66430 67886 81484 96980 101855 108916 109690 114391 132860 135772 136145 142597 169715 190603 203710 219380 228782 272290 285194 339430 353977 381206 407420 457564 544580 570388 571955 584491 678860 707954 712985 762412 800737 953015 1143910 1168982 1415908 1425970 1487083 1601474 1769885 1906030 2287820 2337964 2455489 2477839 2851940 2922455 2974166 3202948 3539770 3812060 4003685 4091437 4910978 4955678 5844910 5948332 7079540 7435415 7598383 8007370 8182874 9821956 9911356 10409581 11689820 12277445 12389195 14870830 15196766 16014740 16365748 17188423 20457185 20819162 24554890 24778390 29741660 30393532 31921357 34376846 37991915 40914370 41638324 42667843 49109780 49556780 52047905 53188681 63842714 68753692 75983830 81828740 85335686 85942115 104095810 106377362 127685428 151967660 159606785 170671372 171884230 179250697 208191620 212754724 213339215 223449499 265943405 298674901 319213570 343768460 358501394 426678430 446898998 531886810 554681959 597349802 638427140 717002788 853356860 893797996 896253485 915897397 1063773620 1109363918 1117247495 1194699604 1254754879 1493374505 1792506970 1831794794 2218727836 2234494990 2330259061 2509509758 2773409795 2986749010 3585013940 3663589588 3882773713 4468989980 4579486985 4660518122 5019019516 5546819590 5973498020 6273774395 6411281779 7765547426 9158973970 9321036244 11093639180 11651295305 11906666161 12547548790 12822563558 15531094852 16311813427 18317947940 19413868565 23302590610 23813332322 25095097580 25645127116 32056408895 32623626854 38827737130 46605181220 47626664644 59533330805 64112817790 65247253708 66860509981 77655474260 81559067135 83346663127 119066661610 128225635580 133721019962 163118134270 166693326254 238133323220 267442039924 326236268540 333386652508 334302549905 416733315635 468023569867 668605099810 833466631270 869186629753 936047139734 1337210199620 1666933262540 1738373259506 1872094279468 2340117849335 3476746519012 4345933148765 4680235698670 6084306408271 8691866297530 9360471397340 12168612816542 17383732595060 24337225633084 30421532041355 60843064082710 121686128165420
• Sum of all divisors σ(n): 319879100838528
• Sum of proper divisors (its aliquot sum) s(n): 198192972673108
• 121686128165420 is an abundant number, because the sum of its proper divisors (198192972673108) is greater than itself. Its abundance is 76506844507688

Bases of 121686128165420

• Binary: 11011101010110001000010011100011000001000101100₂
• Hexadecimal: 0x6EAC4271822C
• Base-36: 174TU2V7L8

Squares and roots of 121686128165420

• 121686128165420 squared (121686128165420²) is 14807513787891022614883776400
• 121686128165420 cubed (121686128165420³) is 1801869020604530758758574881087853492088000
• The square root of 121686128165420 is 11031143.5565593107
• The cube root of 121686128165420 is 49554.1872559799

Scales and comparisons

• 121,686,128,165,420 seconds is equal to 3,869,242 years, 24 weeks, 5 days, 4 hours, 10 minutes, 20 seconds.
• To count from 1 to 121,686,128,165,420 would take you about nine million, six hundred seventy-three thousand, one 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 121686128165420 cubic inches would be around 4129.5 feet tall.

Recreational maths with 121686128165420

• 121686128165420 backwards is 024561821686121
• The number of decimal digits it has is: 15
• The sum of 121686128165420's digits is 53
• More coming soon!