129718976 has 28 divisors (see below), whose sum is σ = 272555208. Its totient is φ = 61043712.

The previous prime is 129718961. The next prime is 129718991. The reversal of 129718976 is 679817921.

It is an interprime number because it is at equal distance from previous prime (129718961) and next prime (129718991).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58526 + ... + 60701.

Almost surely, 2^129718976 is an apocalyptic number.

129718976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129718976 is an abundant number, since it is smaller than the sum of its proper divisors (142836232).

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

129718976 is a wasteful number, since it uses less digits than its factorization.

129718976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119256 (or 119246 counting only the distinct ones).

The product of its digits is 381024, while the sum is 50.

The square root of 129718976 is about 11389.4238660259. The cubic root of 129718976 is about 506.2144102197.

The spelling of 129718976 in words is "one hundred twenty-nine million, seven hundred eighteen thousand, nine hundred seventy-six".