129951402 has 24 divisors (see below), whose sum is σ = 297200736. Its totient is φ = 37107864.

The previous prime is 129951401. The next prime is 129951433. The reversal of 129951402 is 204159921.

It is not an unprimeable number, because it can be changed into a prime (129951401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72999 + ... + 74757.

It is an arithmetic number, because the mean of its divisors is an integer number (12383364).

Almost surely, 2^129951402 is an apocalyptic number.

129951402 is an abundant number, since it is smaller than the sum of its proper divisors (167249334).

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

129951402 is an frugal number, since it uses more digits than its factorization.

129951402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530 (or 1771 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 129951402 is about 11399.6228884994. The cubic root of 129951402 is about 506.5165690159.

The spelling of 129951402 in words is "one hundred twenty-nine million, nine hundred fifty-one thousand, four hundred two".