129924568 has 8 divisors (see below), whose sum is σ = 243608580. Its totient is φ = 64962280.

The previous prime is 129924559. The next prime is 129924569. The reversal of 129924568 is 865429921.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129924569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8120278 + ... + 8120293.

Almost surely, 2^129924568 is an apocalyptic number.

It is an amenable number.

129924568 is a deficient number, since it is larger than the sum of its proper divisors (113684012).

129924568 is a wasteful number, since it uses less digits than its factorization.

129924568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16240577 (or 16240573 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 129924568 is about 11398.4458589757. The cubic root of 129924568 is about 506.4817026452.

The spelling of 129924568 in words is "one hundred twenty-nine million, nine hundred twenty-four thousand, five hundred sixty-eight".