129059900 has 36 divisors (see below), whose sum is σ = 292241712. Its totient is φ = 49378560.

The previous prime is 129059897. The next prime is 129059911. The reversal of 129059900 is 9950921.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25757 + ... + 30356.

Almost surely, 2^129059900 is an apocalyptic number.

129059900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129059900 is an abundant number, since it is smaller than the sum of its proper divisors (163181812).

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

129059900 is a wasteful number, since it uses less digits than its factorization.

129059900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56150 (or 56143 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 129059900 is about 11360.4533360249. The cubic root of 129059900 is about 505.3556296432.

The spelling of 129059900 in words is "one hundred twenty-nine million, fifty-nine thousand, nine hundred".