7839942 has 16 divisors (see below), whose sum is σ = 17105472. Its totient is φ = 2375720.

The previous prime is 7839911. The next prime is 7839959. The reversal of 7839942 is 2499387.

7839942 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×7839942² = 122929381126728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7839894 and 7839903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59328 + ... + 59459.

It is an arithmetic number, because the mean of its divisors is an integer number (1069092).

Almost surely, 2^7839942 is an apocalyptic number.

7839942 is an abundant number, since it is smaller than the sum of its proper divisors (9265530).

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

7839942 is a wasteful number, since it uses less digits than its factorization.

7839942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118803.

The product of its digits is 108864, while the sum is 42.

The square root of 7839942 is about 2799.9896428380. The cubic root of 7839942 is about 198.6571877875.

The spelling of 7839942 in words is "seven million, eight hundred thirty-nine thousand, nine hundred forty-two".