129134432 has 24 divisors (see below), whose sum is σ = 290552976. Its totient is φ = 55343232.

The previous prime is 129134417. The next prime is 129134449. The reversal of 129134432 is 234431921.

It is a junction number, because it is equal to n+sod(n) for n = 129134395 and 129134404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288023 + ... + 288470.

It is an arithmetic number, because the mean of its divisors is an integer number (12106374).

Almost surely, 2^129134432 is an apocalyptic number.

It is an amenable number.

129134432 is an abundant number, since it is smaller than the sum of its proper divisors (161418544).

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

129134432 is an equidigital number, since it uses as much as digits as its factorization.

129134432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576510 (or 576502 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 129134432 is about 11363.7331894057. The cubic root of 129134432 is about 505.4528917610.

The spelling of 129134432 in words is "one hundred twenty-nine million, one hundred thirty-four thousand, four hundred thirty-two".