129518112 has 24 divisors (see below), whose sum is σ = 339985296. Its totient is φ = 43172672.

The previous prime is 129518111. The next prime is 129518131. The reversal of 129518112 is 211815921.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 129518112.

It is not an unprimeable number, because it can be changed into a prime (129518111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674478 + ... + 674669.

It is an arithmetic number, because the mean of its divisors is an integer number (14166054).

Almost surely, 2^129518112 is an apocalyptic number.

129518112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129518112 is an abundant number, since it is smaller than the sum of its proper divisors (210467184).

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

129518112 is a wasteful number, since it uses less digits than its factorization.

129518112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349160 (or 1349152 counting only the distinct ones).

The product of its digits is 1440, while the sum is 30.

The square root of 129518112 is about 11380.6024445106. The cubic root of 129518112 is about 505.9529918262.

The spelling of 129518112 in words is "one hundred twenty-nine million, five hundred eighteen thousand, one hundred twelve".