342139842 has 48 divisors (see below), whose sum is σ = 835729440. Its totient is φ = 103676760.

The previous prime is 342139813. The next prime is 342139867. The reversal of 342139842 is 248931243.

It is a junction number, because it is equal to n+sod(n) for n = 342139797 and 342139806.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19648 + ... + 32715.

It is an arithmetic number, because the mean of its divisors is an integer number (17411030).

Almost surely, 2^342139842 is an apocalyptic number.

342139842 is an abundant number, since it is smaller than the sum of its proper divisors (493589598).

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

342139842 is a wasteful number, since it uses less digits than its factorization.

342139842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52396 (or 52379 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 342139842 is about 18497.0225171512. The cubic root of 342139842 is about 699.4143686914.

The spelling of 342139842 in words is "three hundred forty-two million, one hundred thirty-nine thousand, eight hundred forty-two".