129204590 has 32 divisors (see below), whose sum is σ = 254202624. Its totient is φ = 47070720.

The previous prime is 129204587. The next prime is 129204601. The reversal of 129204590 is 95402921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6989 + ... + 17528.

It is an arithmetic number, because the mean of its divisors is an integer number (7943832).

Almost surely, 2^129204590 is an apocalyptic number.

129204590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129204590 is a deficient number, since it is larger than the sum of its proper divisors (124998034).

129204590 is a wasteful number, since it uses less digits than its factorization.

129204590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24572.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 129204590 is about 11366.8196959396. The cubic root of 129204590 is about 505.5444117461.

The spelling of 129204590 in words is "one hundred twenty-nine million, two hundred four thousand, five hundred ninety".