139412522 has 32 divisors (see below), whose sum is σ = 226606464. Its totient is φ = 64152000.

The previous prime is 139412513. The next prime is 139412617. The reversal of 139412522 is 225214931.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171497 + ... + 172307.

It is an arithmetic number, because the mean of its divisors is an integer number (7081452).

Almost surely, 2^139412522 is an apocalyptic number.

139412522 is a deficient number, since it is larger than the sum of its proper divisors (87193942).

139412522 is a wasteful number, since it uses less digits than its factorization.

139412522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974.

The product of its digits is 4320, while the sum is 29.

The square root of 139412522 is about 11807.3079912400. The cubic root of 139412522 is about 518.5220880660.

The spelling of 139412522 in words is "one hundred thirty-nine million, four hundred twelve thousand, five hundred twenty-two".