129104274 has 64 divisors (see below), whose sum is σ = 290304000. Its totient is φ = 38007360.

The previous prime is 129104251. The next prime is 129104291. The reversal of 129104274 is 472401921.

It is a Curzon 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, 258477 + ... + 258975.

It is an arithmetic number, because the mean of its divisors is an integer number (4536000).

Almost surely, 2^129104274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129104274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145152000).

129104274 is an abundant number, since it is smaller than the sum of its proper divisors (161199726).

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

129104274 is a wasteful number, since it uses less digits than its factorization.

129104274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 129104274 is about 11362.4061712298. The cubic root of 129104274 is about 505.4135409468.

The spelling of 129104274 in words is "one hundred twenty-nine million, one hundred four thousand, two hundred seventy-four".