138942121864

Names of 138942121864

• Cardinal: 138942121864 can be written as One hundred thirty-eight billion, nine hundred forty-two million, one hundred twenty-one thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 1.38942121864 × 10¹¹

Factors of 138942121864

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 422

Divisors of 138942121864

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 7 8 13 14 17 19 26 28 34 38 52 56 68 76 91 104 119 133 136 137 152 182 221 227 238 247 266 274 323 361 364 442 454 476 494 532 548 646 722 728 884 908 952 959 988 1064 1096 1292 1444 1547 1589 1729 1768 1781 1816 1918 1976 2261 2329 2527 2584 2603 2888 2951 3094 3178 3458 3562 3836 3859 4199 4313 4522 4658 4693 5054 5206 5902 6137 6188 6356 6916 7124 7672 7718 8398 8626 9044 9316 9386 10108 10412 11804 12274 12376 12467 12712 13832 14248 15436 16303 16796 17252 18088 18221 18632 18772 20216 20657 20824 23608 24548 24934 27013 29393 30191 30277 30872 31099 32606 32851 33592 33839 34504 36442 37544 41314 42959 44251 49096 49457 49868 50167 54026 56069 58786 60382 60554 62198 65212 65702 67678 72884 73321 79781 81947 82628 85918 88502 98914 99736 100334 108052 112138 117572 120764 121108 124396 130424 131404 135356 145768 146642 159562 163894 165256 171836 177004 197828 200668 211939 216104 217693 224276 235144 236873 241528 242216 248792 262808 270712 293284 309757 319124 327788 343672 346199 351169 354008 392483 395656 401336 404287 423878 435386 448552 473746 513247 528683 558467 573629 575263 586568 590881 619514 638248 642941 655576 692398 702338 784966 808574 840769 847756 870772 947492 953173 1026494 1057366 1065311 1116934 1147258 1150526 1181762 1239028 1285882 1384796 1393099 1404676 1569932 1617148 1681538 1695512 1741544 1894984 1906346 2052988 2114732 2130622 2233868 2294516 2301052 2363524 2478056 2571764 2769592 2786198 2809352 2830009 3139864 3234296 3363076 3700781 3812692 4026841 4105976 4136167 4229464 4261244 4467736 4500587 4589032 4602104 4727048 5143528 5572396 5660018 5885383 6672211 6726152 6872879 7401562 7457177 7625384 7681453 8053682 8272334 8522488 9001174 9751693 10044977 10929997 11144792 11226739 11320036 11770766 13344422 13745758 14803124 14914354 15362906 16107364 16544668 18002348 18110287 19503386 20089954 21859994 22453478 22640072 23541532 26688844 27491516 29606248 29828708 30725812 32214728 33089336 36004696 36220574 39006772 40179908 43719988 44906956 47083064 48110153 53377688 53770171 54983032 59657416 61451624 70314839 72441148 76509979 78013544 78587173 80359816 87439976 89813912 96220306 107540342 126772009 130584701 140629678 144882296 145947607 153019958 157174346 190854563 192440612 215080684 253544018 261169402 281259356 291895214 306039916 314348692 381709126 384881224 430161368 507088036 522338804 562518712 583790428 612079832 628697384 763418252 914092907 1014176072 1021633249 1044677608 1167580856 1335981941 1526836504 1828185814 2043266498 2481109319 2671963882 3656371628 4086532996 4962218638 5343927764 7312743256 8173065992 9924437276 10687855528 17367765233 19848874552 34735530466 69471060932 138942121864
• Sum of all divisors σ(n): 362510588160
• Sum of proper divisors (its aliquot sum) s(n): 223568466296
• 138942121864 is an abundant number, because the sum of its proper divisors (223568466296) is greater than itself. Its abundance is 84626344432

Bases of 138942121864

• Binary: 10000001011001100110001000011110001000₂
• Hexadecimal: 0x2059988788
• Base-36: 1RTUJVD4

Squares and roots of 138942121864

• 138942121864 squared (138942121864²) is 19304913228070626834496
• 138942121864 cubed (138942121864³) is 2682265606308534659237411791020544
• The square root of 138942121864 is 372749.4089384985
• The cube root of 138942121864 is 5179.3823876677

Scales and comparisons

• 138,942,121,864 seconds is equal to 4,417 years, 48 weeks, 2 days, 9 hours, 51 minutes, 4 seconds.
• To count from 1 to 138,942,121,864 would take you about eight 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 138942121864 cubic inches would be around 431.6 feet tall.

Recreational maths with 138942121864

• 138942121864 backwards is 468121249831
• The number of decimal digits it has is: 12
• The sum of 138942121864's digits is 49
• More coming soon!