129120892604 has 24 divisors (see below), whose sum is σ = 254455251456. Its totient is φ = 56798046000.

The previous prime is 129120892603. The next prime is 129120892627. The reversal of 129120892604 is 406298021921.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129120892601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47330342 + ... + 47333069.

It is an arithmetic number, because the mean of its divisors is an integer number (10602302144).

Almost surely, 2^129120892604 is an apocalyptic number.

It is an amenable number.

129120892604 is a deficient number, since it is larger than the sum of its proper divisors (125334358852).

129120892604 is a wasteful number, since it uses less digits than its factorization.

129120892604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94663457 (or 94663455 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 129120892604 in words is "one hundred twenty-nine billion, one hundred twenty million, eight hundred ninety-two thousand, six hundred four".