142439694 has 64 divisors (see below), whose sum is σ = 308448000. Its totient is φ = 43718400.

The previous prime is 142439681. The next prime is 142439701. The reversal of 142439694 is 496934241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1024677 + ... + 1024815.

It is an arithmetic number, because the mean of its divisors is an integer number (4819500).

Almost surely, 2^142439694 is an apocalyptic number.

142439694 is an abundant number, since it is smaller than the sum of its proper divisors (166008306).

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

142439694 is a wasteful number, since it uses less digits than its factorization.

142439694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353.

The product of its digits is 186624, while the sum is 42.

The square root of 142439694 is about 11934.8101786329. The cubic root of 142439694 is about 522.2482707963.

The spelling of 142439694 in words is "one hundred forty-two million, four hundred thirty-nine thousand, six hundred ninety-four".