129931002 has 48 divisors (see below), whose sum is σ = 295776000. Its totient is φ = 41142816.

The previous prime is 129930989. The next prime is 129931003. The reversal of 129931002 is 200139921.

It is not an unprimeable number, because it can be changed into a prime (129931003) 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 23 ways as a sum of consecutive naturals, for example, 63999 + ... + 65997.

It is an arithmetic number, because the mean of its divisors is an integer number (6162000).

Almost surely, 2^129931002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129931002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147888000).

129931002 is an abundant number, since it is smaller than the sum of its proper divisors (165844998).

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

129931002 is a wasteful number, since it uses less digits than its factorization.

129931002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187 (or 2184 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 129931002 is about 11398.7280869402. The cubic root of 129931002 is about 506.4900630078.

The spelling of 129931002 in words is "one hundred twenty-nine million, nine hundred thirty-one thousand, two".