129312104 has 16 divisors (see below), whose sum is σ = 242637120. Its totient is φ = 64608880.

The previous prime is 129312097. The next prime is 129312107. The reversal of 129312104 is 401213921.

It is a self number, because there is not a number n which added to its sum of digits gives 129312104.

It is not an unprimeable number, because it can be changed into a prime (129312107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7559 + ... + 17769.

It is an arithmetic number, because the mean of its divisors is an integer number (15164820).

Almost surely, 2^129312104 is an apocalyptic number.

It is an amenable number.

129312104 is a deficient number, since it is larger than the sum of its proper divisors (113325016).

129312104 is a wasteful number, since it uses less digits than its factorization.

129312104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11800 (or 11796 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 129312104 is about 11371.5480036801. The cubic root of 129312104 is about 505.6845977687.

The spelling of 129312104 in words is "one hundred twenty-nine million, three hundred twelve thousand, one hundred four".