129512964 has 24 divisors (see below), whose sum is σ = 345368128. Its totient is φ = 37003680.

The previous prime is 129512941. The next prime is 129512983. The reversal of 129512964 is 469215921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770827 + ... + 770994.

Almost surely, 2^129512964 is an apocalyptic number.

129512964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

129512964 is an abundant number, since it is smaller than the sum of its proper divisors (215855164).

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

129512964 is a wasteful number, since it uses less digits than its factorization.

129512964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541835 (or 1541833 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 129512964 is about 11380.3762679447. The cubic root of 129512964 is about 505.9462883095.

The spelling of 129512964 in words is "one hundred twenty-nine million, five hundred twelve thousand, nine hundred sixty-four".