129725703 has 6 divisors (see below), whose sum is σ = 187381584. Its totient is φ = 86483796.

The previous prime is 129725693. The next prime is 129725707. The reversal of 129725703 is 307527921.

129725703 is a `hidden beast` number, since 12 + 9 + 72 + 570 + 3 = 666.

It is not a de Polignac number, because 129725703 - 2²⁰ = 128677127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129725707) 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 5 ways as a sum of consecutive naturals, for example, 7206975 + ... + 7206992.

It is an arithmetic number, because the mean of its divisors is an integer number (31230264).

Almost surely, 2^129725703 is an apocalyptic number.

129725703 is a deficient number, since it is larger than the sum of its proper divisors (57655881).

129725703 is a wasteful number, since it uses less digits than its factorization.

129725703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14413973 (or 14413970 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 129725703 is about 11389.7191800325. The cubic root of 129725703 is about 506.2231605341.

It can be divided in two parts, 1297 and 25703, that added together give a cube (27000 = 30³).

The spelling of 129725703 in words is "one hundred twenty-nine million, seven hundred twenty-five thousand, seven hundred three".