129321374 has 16 divisors (see below), whose sum is σ = 238747488. Its totient is φ = 51160032.

The previous prime is 129321347. The next prime is 129321407. The reversal of 129321374 is 473123921.

It is a self number, because there is not a number n which added to its sum of digits gives 129321374.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355097 + ... + 355460.

It is an arithmetic number, because the mean of its divisors is an integer number (14921718).

Almost surely, 2^129321374 is an apocalyptic number.

129321374 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

129321374 is a deficient number, since it is larger than the sum of its proper divisors (109426114).

129321374 is a wasteful number, since it uses less digits than its factorization.

129321374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710579.

The product of its digits is 9072, while the sum is 32.

The square root of 129321374 is about 11371.9555925971. The cubic root of 129321374 is about 505.6966811547.

The spelling of 129321374 in words is "one hundred twenty-nine million, three hundred twenty-one thousand, three hundred seventy-four".