129090232 has 16 divisors (see below), whose sum is σ = 244961640. Its totient is φ = 63767136.

The previous prime is 129090229. The next prime is 129090239. The reversal of 129090232 is 232090921.

It is a self number, because there is not a number n which added to its sum of digits gives 129090232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129090239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96543 + ... + 97870.

Almost surely, 2^129090232 is an apocalyptic number.

It is an amenable number.

129090232 is a deficient number, since it is larger than the sum of its proper divisors (115871408).

129090232 is a wasteful number, since it uses less digits than its factorization.

129090232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194502 (or 194498 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 129090232 is about 11361.7882395334. The cubic root of 129090232 is about 505.3952165489.

The spelling of 129090232 in words is "one hundred twenty-nine million, ninety thousand, two hundred thirty-two".