129415104 has 224 divisors, whose sum is σ = 468823040. Its totient is φ = 34089984.

The previous prime is 129415087. The next prime is 129415157. The reversal of 129415104 is 401514921.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156837 + ... + 157659.

It is an arithmetic number, because the mean of its divisors is an integer number (2092960).

Almost surely, 2^129415104 is an apocalyptic number.

129415104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129415104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234411520).

129415104 is an abundant number, since it is smaller than the sum of its proper divisors (339407936).

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

129415104 is a wasteful number, since it uses less digits than its factorization.

129415104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 129415104 is about 11376.0759491136. The cubic root of 129415104 is about 505.8188251895.

The spelling of 129415104 in words is "one hundred twenty-nine million, four hundred fifteen thousand, one hundred four".