129871734 has 32 divisors (see below), whose sum is σ = 264176640. Its totient is φ = 42556800.

The previous prime is 129871711. The next prime is 129871747. The reversal of 129871734 is 437178921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146974 + ... + 147854.

It is an arithmetic number, because the mean of its divisors is an integer number (8255520).

Almost surely, 2^129871734 is an apocalyptic number.

129871734 is an abundant number, since it is smaller than the sum of its proper divisors (134304906).

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

129871734 is a wasteful number, since it uses less digits than its factorization.

129871734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276.

The product of its digits is 84672, while the sum is 42.

The square root of 129871734 is about 11396.1280266589. The cubic root of 129871734 is about 506.4130395156.

The spelling of 129871734 in words is "one hundred twenty-nine million, eight hundred seventy-one thousand, seven hundred thirty-four".