129311274 has 16 divisors (see below), whose sum is σ = 259442208. Its totient is φ = 42967152.

The previous prime is 129311269. The next prime is 129311293. The reversal of 129311274 is 472113921.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32092 + ... + 35895.

It is an arithmetic number, because the mean of its divisors is an integer number (16215138).

Almost surely, 2^129311274 is an apocalyptic number.

129311274 is an abundant number, since it is smaller than the sum of its proper divisors (130130934).

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

129311274 is a wasteful number, since it uses less digits than its factorization.

129311274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68309.

The product of its digits is 3024, while the sum is 30.

The square root of 129311274 is about 11371.5115090299. The cubic root of 129311274 is about 505.6835158408.

The spelling of 129311274 in words is "one hundred twenty-nine million, three hundred eleven thousand, two hundred seventy-four".