129372112 has 40 divisors (see below), whose sum is σ = 254983680. Its totient is φ = 63580800.

The previous prime is 129372107. The next prime is 129372127. The reversal of 129372112 is 211273921.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360189 + ... + 360547.

It is an arithmetic number, because the mean of its divisors is an integer number (6374592).

Almost surely, 2^129372112 is an apocalyptic number.

It is an amenable number.

129372112 is a deficient number, since it is larger than the sum of its proper divisors (125611568).

129372112 is a wasteful number, since it uses less digits than its factorization.

129372112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 685 counting only the distinct ones).

The product of its digits is 1512, while the sum is 28.

The square root of 129372112 is about 11374.1862126484. The cubic root of 129372112 is about 505.7628075873.

The spelling of 129372112 in words is "one hundred twenty-nine million, three hundred seventy-two thousand, one hundred twelve".