129138150 has 24 divisors (see below), whose sum is σ = 320262984. Its totient is φ = 34436800.

The previous prime is 129138133. The next prime is 129138161. The reversal of 129138150 is 51831921.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

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, 430311 + ... + 430610.

It is an arithmetic number, because the mean of its divisors is an integer number (13344291).

Almost surely, 2^129138150 is an apocalyptic number.

129138150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129138150 is an abundant number, since it is smaller than the sum of its proper divisors (191124834).

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

129138150 is a wasteful number, since it uses less digits than its factorization.

129138150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860936 (or 860931 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 129138150 is about 11363.8967788343. The cubic root of 129138150 is about 505.4577426640.

The spelling of 129138150 in words is "one hundred twenty-nine million, one hundred thirty-eight thousand, one hundred fifty".