129525126 has 8 divisors (see below), whose sum is σ = 259050264. Its totient is φ = 43175040.

The previous prime is 129525101. The next prime is 129525181. The reversal of 129525126 is 621525921.

It is a sphenic number, since it is the product of 3 distinct primes.

129525126 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10793755 + ... + 10793766.

It is an arithmetic number, because the mean of its divisors is an integer number (32381283).

Almost surely, 2^129525126 is an apocalyptic number.

129525126 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

129525126 is a wasteful number, since it uses less digits than its factorization.

129525126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21587526.

The product of its digits is 10800, while the sum is 33.

The square root of 129525126 is about 11380.9105962572. The cubic root of 129525126 is about 505.9621248867.

The spelling of 129525126 in words is "one hundred twenty-nine million, five hundred twenty-five thousand, one hundred twenty-six".