129134292 has 48 divisors (see below), whose sum is σ = 353673600. Its totient is φ = 35897472.

The previous prime is 129134281. The next prime is 129134309. The reversal of 129134292 is 292431921.

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, 17667 + ... + 23882.

It is an arithmetic number, because the mean of its divisors is an integer number (7368200).

Almost surely, 2^129134292 is an apocalyptic number.

129134292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129134292 is an abundant number, since it is smaller than the sum of its proper divisors (224539308).

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

129134292 is a wasteful number, since it uses less digits than its factorization.

129134292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41600 (or 41598 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 129134292 is about 11363.7270294565. The cubic root of 129134292 is about 505.4527091001.

It can be divided in two parts, 12913 and 4292, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 129134292 in words is "one hundred twenty-nine million, one hundred thirty-four thousand, two hundred ninety-two".