129145908 has 12 divisors (see below), whose sum is σ = 301340480. Its totient is φ = 43048632.

The previous prime is 129145879. The next prime is 129145909. The reversal of 129145908 is 809541921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129145909) 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, 5381068 + ... + 5381091.

Almost surely, 2^129145908 is an apocalyptic number.

It is an amenable number.

129145908 is an abundant number, since it is smaller than the sum of its proper divisors (172194572).

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

129145908 is a wasteful number, since it uses less digits than its factorization.

129145908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10762166 (or 10762164 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 129145908 is about 11364.2381178854. The cubic root of 129145908 is about 505.4678642860.

The spelling of 129145908 in words is "one hundred twenty-nine million, one hundred forty-five thousand, nine hundred eight".