129251244 has 12 divisors (see below), whose sum is σ = 301586264. Its totient is φ = 43083744.

The previous prime is 129251209. The next prime is 129251251. The reversal of 129251244 is 442152921.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5385457 + ... + 5385480.

Almost surely, 2^129251244 is an apocalyptic number.

It is an amenable number.

129251244 is an abundant number, since it is smaller than the sum of its proper divisors (172335020).

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

129251244 is a wasteful number, since it uses less digits than its factorization.

129251244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10770944 (or 10770942 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 129251244 is about 11368.8717118279. The cubic root of 129251244 is about 505.6052528012.

The spelling of 129251244 in words is "one hundred twenty-nine million, two hundred fifty-one thousand, two hundred forty-four".