129579042 has 32 divisors (see below), whose sum is σ = 262598400. Its totient is φ = 42624000.

The previous prime is 129579041. The next prime is 129579077. The reversal of 129579042 is 240975921.

It is not an unprimeable number, because it can be changed into a prime (129579041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172167 + ... + 172917.

It is an arithmetic number, because the mean of its divisors is an integer number (8206200).

Almost surely, 2^129579042 is an apocalyptic number.

129579042 is an abundant number, since it is smaller than the sum of its proper divisors (133019358).

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

129579042 is a wasteful number, since it uses less digits than its factorization.

129579042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 129579042 is about 11383.2790530673. The cubic root of 129579042 is about 506.0323189114.

The spelling of 129579042 in words is "one hundred twenty-nine million, five hundred seventy-nine thousand, forty-two".