129044670 has 32 divisors (see below), whose sum is σ = 312780960. Its totient is φ = 34070400.

The previous prime is 129044647. The next prime is 129044689. The reversal of 129044670 is 76440921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18265 + ... + 24324.

It is an arithmetic number, because the mean of its divisors is an integer number (9774405).

Almost surely, 2^129044670 is an apocalyptic number.

129044670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129044670 is an abundant number, since it is smaller than the sum of its proper divisors (183736290).

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

129044670 is a wasteful number, since it uses less digits than its factorization.

129044670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42700.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 129044670 is about 11359.7830084910. The cubic root of 129044670 is about 505.3357503236.

The spelling of 129044670 in words is "one hundred twenty-nine million, forty-four thousand, six hundred seventy".