129933040 has 40 divisors (see below), whose sum is σ = 319867920. Its totient is φ = 48915456.

The previous prime is 129933031. The next prime is 129933073. The reversal of 129933040 is 40339921.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 129932993 and 129933011.

It is a congruent number.

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, 46410 + ... + 49129.

It is an arithmetic number, because the mean of its divisors is an integer number (7996698).

Almost surely, 2^129933040 is an apocalyptic number.

129933040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129933040 is an abundant number, since it is smaller than the sum of its proper divisors (189934880).

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

129933040 is a wasteful number, since it uses less digits than its factorization.

129933040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95569 (or 95563 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 129933040 is about 11398.8174825286. The cubic root of 129933040 is about 506.4927111347.

The spelling of 129933040 in words is "one hundred twenty-nine million, nine hundred thirty-three thousand, forty".