129990174 has 16 divisors (see below), whose sum is σ = 260462208. Its totient is φ = 43249752.

The previous prime is 129990173. The next prime is 129990193. The reversal of 129990174 is 471099921.

129990174 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129990173) 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, 16522 + ... + 23085.

It is an arithmetic number, because the mean of its divisors is an integer number (16278888).

Almost surely, 2^129990174 is an apocalyptic number.

129990174 is an abundant number, since it is smaller than the sum of its proper divisors (130472034).

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

129990174 is a wasteful number, since it uses less digits than its factorization.

129990174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40159.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 129990174 is about 11401.3233442439. The cubic root of 129990174 is about 506.5669383779.

The spelling of 129990174 in words is "one hundred twenty-nine million, nine hundred ninety thousand, one hundred seventy-four".