129467172 has 24 divisors (see below), whose sum is σ = 319860576. Its totient is φ = 40617088.

The previous prime is 129467171. The next prime is 129467201. The reversal of 129467172 is 271764921.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 129467172.

It is not an unprimeable number, because it can be changed into a prime (129467171) 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, 317118 + ... + 317525.

It is an arithmetic number, because the mean of its divisors is an integer number (13327524).

Almost surely, 2^129467172 is an apocalyptic number.

129467172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129467172 is an abundant number, since it is smaller than the sum of its proper divisors (190393404).

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

129467172 is a wasteful number, since it uses less digits than its factorization.

129467172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634667 (or 634665 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 129467172 is about 11378.3642058074. The cubic root of 129467172 is about 505.8866520054.

The spelling of 129467172 in words is "one hundred twenty-nine million, four hundred sixty-seven thousand, one hundred seventy-two".