129375126 has 24 divisors (see below), whose sum is σ = 284155560. Its totient is φ = 42533856.

The previous prime is 129375101. The next prime is 129375137. The reversal of 129375126 is 621573921.

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, 47916 + ... + 50543.

It is an arithmetic number, because the mean of its divisors is an integer number (11839815).

Almost surely, 2^129375126 is an apocalyptic number.

129375126 is an abundant number, since it is smaller than the sum of its proper divisors (154780434).

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

129375126 is a wasteful number, since it uses less digits than its factorization.

129375126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98540 (or 98537 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 129375126 is about 11374.3187048720. The cubic root of 129375126 is about 505.7667351656.

The spelling of 129375126 in words is "one hundred twenty-nine million, three hundred seventy-five thousand, one hundred twenty-six".