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120121123230 = 2355129738113
BaseRepresentation
bin110111111011111000…
…1101110000110011110
3102111001110002022100000
41233313301232012132
53432002001420410
6131103300315130
711451466462233
oct1576761560636
9374043068300
10120121123230
1146a41273869
121b3443a2aa6
13b434315614
145b5747578a
1531d092ddc0
hex1bf7c6e19e

120121123230 has 96 divisors (see below), whose sum is σ = 324140360544. Its totient is φ = 32006762496.

The previous prime is 120121123229. The next prime is 120121123249. The reversal of 120121123230 is 32321121021.

120121123230 is a `hidden beast` number, since 1 + 201 + 211 + 23 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3132654 + ... + 3170766.

It is an arithmetic number, because the mean of its divisors is an integer number (3376462089).

Almost surely, 2120121123230 is an apocalyptic number.

120121123230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 120121123230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162070180272).

120121123230 is an abundant number, since it is smaller than the sum of its proper divisors (204019237314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120121123230 is a wasteful number, since it uses less digits than its factorization.

120121123230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39432 (or 39420 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 120121123230 its reverse (32321121021), we get a palindrome (152442244251).

The spelling of 120121123230 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred twenty-three thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 243 270 405 486 810 1215 1297 2430 2594 3891 6485 7782 11673 12970 19455 23346 35019 38113 38910 58365 70038 76226 105057 114339 116730 175095 190565 210114 228678 315171 343017 350190 381130 525285 571695 630342 686034 1029051 1050570 1143390 1575855 1715085 2058102 3087153 3151710 3430170 5145255 6174306 9261459 10290510 15435765 18522918 30871530 46307295 49432561 92614590 98865122 148297683 247162805 296595366 444893049 494325610 741488415 889786098 1334679147 1482976830 2224465245 2669358294 4004037441 4448930490 6673395735 8008074882 12012112323 13346791470 20020187205 24024224646 40040374410 60060561615 120121123230