129119904 has 72 divisors (see below), whose sum is σ = 375036480. Its totient is φ = 42119808.

The previous prime is 129119843. The next prime is 129119909. The reversal of 129119904 is 409911921.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (129119909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8767 + ... + 18305.

It is an arithmetic number, because the mean of its divisors is an integer number (5208840).

Almost surely, 2^129119904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129119904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187518240).

129119904 is an abundant number, since it is smaller than the sum of its proper divisors (245916576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129119904 is a wasteful number, since it uses less digits than its factorization.

129119904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9602 (or 9591 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 129119904 is about 11363.0939448726. The cubic root of 129119904 is about 505.4339360756.

The spelling of 129119904 in words is "one hundred twenty-nine million, one hundred nineteen thousand, nine hundred four".