129274317 has 12 divisors (see below), whose sum is σ = 187422144. Its totient is φ = 85863240.

The previous prime is 129274291. The next prime is 129274333. The reversal of 129274317 is 713472921.

It is not a de Polignac number, because 129274317 - 2⁶ = 129274253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129274357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24063 + ... + 28940.

It is an arithmetic number, because the mean of its divisors is an integer number (15618512).

Almost surely, 2^129274317 is an apocalyptic number.

It is an amenable number.

129274317 is a deficient number, since it is larger than the sum of its proper divisors (58147827).

129274317 is a wasteful number, since it uses less digits than its factorization.

129274317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53280 (or 53277 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 129274317 is about 11369.8864110421. The cubic root of 129274317 is about 505.6353366790.

The spelling of 129274317 in words is "one hundred twenty-nine million, two hundred seventy-four thousand, three hundred seventeen".