129804235 has 16 divisors (see below), whose sum is σ = 170979840. Its totient is φ = 93817440.

The previous prime is 129804221. The next prime is 129804239. The reversal of 129804235 is 532408921.

It is not a de Polignac number, because 129804235 - 2⁷ = 129804107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129804235.

It is not an unprimeable number, because it can be changed into a prime (129804239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1726 + ... + 16204.

It is an arithmetic number, because the mean of its divisors is an integer number (10686240).

Almost surely, 2^129804235 is an apocalyptic number.

129804235 is a deficient number, since it is larger than the sum of its proper divisors (41175605).

129804235 is a wasteful number, since it uses less digits than its factorization.

129804235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14658.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 129804235 is about 11393.1661534448. The cubic root of 129804235 is about 506.3252906361.

The spelling of 129804235 in words is "one hundred twenty-nine million, eight hundred four thousand, two hundred thirty-five".