129873124 has 12 divisors (see below), whose sum is σ = 228469248. Its totient is φ = 64596200.

The previous prime is 129873097. The next prime is 129873127. The reversal of 129873124 is 421378921.

It is not an unprimeable number, because it can be changed into a prime (129873127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84232 + ... + 85759.

It is an arithmetic number, because the mean of its divisors is an integer number (19039104).

Almost surely, 2^129873124 is an apocalyptic number.

It is an amenable number.

129873124 is a deficient number, since it is larger than the sum of its proper divisors (98596124).

129873124 is a wasteful number, since it uses less digits than its factorization.

129873124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170186 (or 170184 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 129873124 is about 11396.1890121216. The cubic root of 129873124 is about 506.4148461998.

The spelling of 129873124 in words is "one hundred twenty-nine million, eight hundred seventy-three thousand, one hundred twenty-four".