7942042 has 8 divisors (see below), whose sum is σ = 11925396. Its totient is φ = 3966912.

The previous prime is 7942031. The next prime is 7942063. The reversal of 7942042 is 2402497.

It can be written as a sum of positive squares in 2 ways, for example, as 7392961 + 549081 = 2719^2 + 741^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7942042² = 126152062259528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7942042.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1828 + ... + 4384.

Almost surely, 2^7942042 is an apocalyptic number.

7942042 is a deficient number, since it is larger than the sum of its proper divisors (3983354).

7942042 is a wasteful number, since it uses less digits than its factorization.

7942042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 7942042 is about 2818.1628767692. The cubic root of 7942042 is about 199.5158455849.

The spelling of 7942042 in words is "seven million, nine hundred forty-two thousand, forty-two".