129601612 has 12 divisors (see below), whose sum is σ = 259203280. Its totient is φ = 55543536.

The previous prime is 129601597. The next prime is 129601631. The reversal of 129601612 is 216106921.

129601612 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 4628629 = 129601612 / (1 + 2 + 9 + 6 + 0 + 1 + 6 + 1 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2314287 + ... + 2314342.

Almost surely, 2^129601612 is an apocalyptic number.

It is an amenable number.

129601612 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

129601612 is a wasteful number, since it uses less digits than its factorization.

129601612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4628640 (or 4628638 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 129601612 is about 11384.2703762692. The cubic root of 129601612 is about 506.0616973413.

The spelling of 129601612 in words is "one hundred twenty-nine million, six hundred one thousand, six hundred twelve".