129132700 has 18 divisors (see below), whose sum is σ = 280218176. Its totient is φ = 51653040.

The previous prime is 129132677. The next prime is 129132713. The reversal of 129132700 is 7231921.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 645564 + ... + 645763.

Almost surely, 2^129132700 is an apocalyptic number.

129132700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129132700 is an abundant number, since it is smaller than the sum of its proper divisors (151085476).

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

129132700 is a wasteful number, since it uses less digits than its factorization.

129132700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291341 (or 1291334 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 129132700 is about 11363.6569817995. The cubic root of 129132700 is about 505.4506319755.

The spelling of 129132700 in words is "one hundred twenty-nine million, one hundred thirty-two thousand, seven hundred".