121991400

Names of 121991400

• Cardinal: 121991400 can be written as One hundred twenty-one million, nine hundred ninety-one thousand, four hundred.

Scientific notation

• Scientific notation: 1.219914 × 10⁸

Factors of 121991400

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 99

Divisors of 121991400

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 19 20 24 25 27 29 30 36 38 40 41 45 50 54 57 58 60 72 75 76 82 87 90 95 100 108 114 116 120 123 135 145 150 152 164 171 174 180 190 200 205 216 225 228 232 246 261 270 285 290 300 328 342 348 360 369 380 410 435 450 456 475 492 513 522 540 551 570 580 600 615 675 684 696 725 738 760 779 783 820 855 870 900 950 984 1025 1026 1044 1080 1102 1107 1140 1160 1189 1230 1305 1350 1368 1425 1450 1476 1558 1566 1640 1653 1710 1740 1800 1845 1900 2050 2052 2088 2175 2204 2214 2280 2337 2378 2460 2565 2610 2700 2755 2850 2900 2952 3075 3116 3132 3306 3420 3480 3567 3690 3800 3895 3915 4100 4104 4275 4350 4408 4428 4674 4756 4920 4959 5130 5220 5400 5510 5535 5700 5800 5945 6150 6232 6264 6525 6612 6840 7011 7134 7380 7790 7830 8200 8265 8550 8700 8856 9225 9348 9512 9918 10260 10440 10701 11020 11070 11400 11685 11890 12300 12825 13050 13224 13775 14022 14268 14760 14877 15580 15660 16530 17100 17400 17835 18450 18696 19475 19575 19836 20520 21033 21402 22040 22140 22591 23370 23780 24600 24795 25650 26100 27550 27675 28044 28536 29725 29754 31160 31320 32103 33060 34200 35055 35670 36900 38950 39150 39672 41325 42066 42804 44280 45182 46740 47560 49590 51300 52200 53505 55100 55350 56088 58425 59450 59508 64206 66120 67773 70110 71340 73800 74385 77900 78300 82650 84132 85608 89175 90364 93480 99180 102600 105165 107010 110200 110700 112955 116850 118900 119016 123975 128412 135546 140220 142680 148770 155800 156600 160515 165300 168264 175275 178350 180728 198360 203319 210330 214020 221400 225910 233700 237800 247950 256824 267525 271092 280440 297540 321030 330600 338865 350550 356700 371925 406638 420660 428040 451820 467400 495900 525825 535050 542184 564775 595080 609957 642060 677730 701100 713400 743850 802575 813276 841320 903640 991800 1016595 1051650 1070100 1129550 1219914 1284120 1355460 1402200 1487700 1605150 1626552 1694325 2033190 2103300 2140200 2259100 2439828 2710920 2975400 3049785 3210300 3388650 4066380 4206600 4518200 4879656 5082975 6099570 6420600 6777300 8132760 10165950 12199140 13554600 15248925 20331900 24398280 30497850 40663800 60995700 121991400
• Sum of all divisors σ(n): 468720000
• Sum of proper divisors (its aliquot sum) s(n): 346728600
• 121991400 is an abundant number, because the sum of its proper divisors (346728600) is greater than itself. Its abundance is 224737200

Bases of 121991400

• Binary: 111010001010111000011101000₂
• Hexadecimal: 0x74570E8
• Base-36: 20MP60

Squares and roots of 121991400

• 121991400 squared (121991400²) is 14881901673960000
• 121991400 cubed (121991400³) is 1815464019868723944000000
• The square root of 121991400 is 11044.9717066183
• The cube root of 121991400 is 495.9559122277

Scales and comparisons

• 121,991,400 seconds is equal to 3 years, 45 weeks, 4 days, 22 hours, 30 minutes.
• To count from 1 to 121,991,400 would take you about 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 121991400 cubic inches would be around 41.3 feet tall.

Recreational maths with 121991400

• 121991400 backwards is 004199121
• 121991400 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 121991400's digits is 27
• More coming soon!