129195492 has 24 divisors (see below), whose sum is σ = 301644000. Its totient is φ = 43038336.

The previous prime is 129195491. The next prime is 129195523. The reversal of 129195492 is 294591921.

It is not an unprimeable number, because it can be changed into a prime (129195491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29884 + ... + 33932.

It is an arithmetic number, because the mean of its divisors is an integer number (12568500).

Almost surely, 2^129195492 is an apocalyptic number.

129195492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129195492 is an abundant number, since it is smaller than the sum of its proper divisors (172448508).

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

129195492 is a wasteful number, since it uses less digits than its factorization.

129195492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6715 (or 6713 counting only the distinct ones).

The product of its digits is 58320, while the sum is 42.

The square root of 129195492 is about 11366.4194890036. The cubic root of 129195492 is about 505.5325454210.

The spelling of 129195492 in words is "one hundred twenty-nine million, one hundred ninety-five thousand, four hundred ninety-two".