129934047 has 16 divisors (see below), whose sum is σ = 180444672. Its totient is φ = 83089440.

The previous prime is 129934039. The next prime is 129934069. The reversal of 129934047 is 740439921.

It is not a de Polignac number, because 129934047 - 2³ = 129934039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129933996 and 129934014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129934097) 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 in 15 ways as a sum of consecutive naturals, for example, 363 + ... + 16124.

It is an arithmetic number, because the mean of its divisors is an integer number (11277792).

Almost surely, 2^129934047 is an apocalyptic number.

129934047 is a deficient number, since it is larger than the sum of its proper divisors (50510625).

129934047 is a wasteful number, since it uses less digits than its factorization.

129934047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16598.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 129934047 is about 11398.8616536916. The cubic root of 129934047 is about 506.4940195954.

The spelling of 129934047 in words is "one hundred twenty-nine million, nine hundred thirty-four thousand, forty-seven".