7901642 has 12 divisors (see below), whose sum is σ = 13787730. Its totient is φ = 3386376.

The previous prime is 7901603. The next prime is 7901669. The reversal of 7901642 is 2461097.

It can be written as a sum of positive squares in only one way, i.e., 6599761 + 1301881 = 2569^2 + 1141^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 40217 + ... + 40412.

Almost surely, 2^7901642 is an apocalyptic number.

7901642 is a deficient number, since it is larger than the sum of its proper divisors (5886088).

7901642 is a wasteful number, since it uses less digits than its factorization.

7901642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80645 (or 80638 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 7901642 is about 2810.9859480261. The cubic root of 7901642 is about 199.1769677354.

The spelling of 7901642 in words is "seven million, nine hundred one thousand, six hundred forty-two".