129937850 has 24 divisors (see below), whose sum is σ = 276211488. Its totient is φ = 44550000.

The previous prime is 129937849. The next prime is 129937853. The reversal of 129937850 is 58739921.

It is not an unprimeable number, because it can be changed into a prime (129937853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185276 + ... + 185975.

It is an arithmetic number, because the mean of its divisors is an integer number (11508812).

Almost surely, 2^129937850 is an apocalyptic number.

129937850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129937850 is an abundant number, since it is smaller than the sum of its proper divisors (146273638).

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

129937850 is a wasteful number, since it uses less digits than its factorization.

129937850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371270 (or 371265 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 129937850 is about 11399.0284673739. The cubic root of 129937850 is about 506.4989610202.

The spelling of 129937850 in words is "one hundred twenty-nine million, nine hundred thirty-seven thousand, eight hundred fifty".