129359172 has 24 divisors (see below), whose sum is σ = 302120896. Its totient is φ = 43079328.

The previous prime is 129359161. The next prime is 129359173. The reversal of 129359172 is 271953921.

It is a self number, because there is not a number n which added to its sum of digits gives 129359172.

It is not an unprimeable number, because it can be changed into a prime (129359173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10113 + ... + 18999.

Almost surely, 2^129359172 is an apocalyptic number.

129359172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129359172 is an abundant number, since it is smaller than the sum of its proper divisors (172761724).

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

129359172 is a wasteful number, since it uses less digits than its factorization.

129359172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10107 (or 10105 counting only the distinct ones).

The product of its digits is 34020, while the sum is 39.

The square root of 129359172 is about 11373.6173665198. The cubic root of 129359172 is about 505.7459446307.

The spelling of 129359172 in words is "one hundred twenty-nine million, three hundred fifty-nine thousand, one hundred seventy-two".