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120412130240 = 2651672253221
BaseRepresentation
bin111000000100100011…
…1110100101111000000
3102111210201122222220102
41300021013310233000
53433101001131430
6131152213501532
711461632135203
oct1601107645700
9374721588812
10120412130240
1147080565726
121b4059418a8
13b47c6b500c
145b83d8793a
1531eb263345
hex1c091f4bc0

120412130240 has 56 divisors (see below), whose sum is σ = 288448467552. Its totient is φ = 47876418560.

The previous prime is 120412130221. The next prime is 120412130243. The reversal of 120412130240 is 42031214021.

It is a super-2 number, since 2×1204121302402 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120412130243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073171 + ... + 1180050.

It is an arithmetic number, because the mean of its divisors is an integer number (5150865492).

Almost surely, 2120412130240 is an apocalyptic number.

120412130240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120412130240 is an abundant number, since it is smaller than the sum of its proper divisors (168036337312).

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

120412130240 is a wasteful number, since it uses less digits than its factorization.

120412130240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253405 (or 2253395 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 120412130240 its reverse (42031214021), we get a palindrome (162443344261).

The spelling of 120412130240 in words is "one hundred twenty billion, four hundred twelve million, one hundred thirty thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 167 320 334 668 835 1336 1670 2672 3340 5344 6680 10688 13360 26720 53440 2253221 4506442 9012884 11266105 18025768 22532210 36051536 45064420 72103072 90128840 144206144 180257680 360515360 376287907 721030720 752575814 1505151628 1881439535 3010303256 3762879070 6020606512 7525758140 12041213024 15051516280 24082426048 30103032560 60206065120 120412130240