7866042 has 16 divisors (see below), whose sum is σ = 15948480. Its totient is φ = 2585952.

The previous prime is 7866041. The next prime is 7866059. The reversal of 7866042 is 2406687.

It is a junction number, because it is equal to n+sod(n) for n = 7865994 and 7866012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7866041) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8542 + ... + 9417.

It is an arithmetic number, because the mean of its divisors is an integer number (996780).

Almost surely, 2^7866042 is an apocalyptic number.

7866042 is an abundant number, since it is smaller than the sum of its proper divisors (8082438).

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

7866042 is a wasteful number, since it uses less digits than its factorization.

7866042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18037.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 7866042 is about 2804.6465017895. The cubic root of 7866042 is about 198.8773939007.

The spelling of 7866042 in words is "seven million, eight hundred sixty-six thousand, forty-two".