7942865 has 16 divisors (see below), whose sum is σ = 10951680. Its totient is φ = 5417280.

The previous prime is 7942861. The next prime is 7942867. The reversal of 7942865 is 5682497.

It is not a de Polignac number, because 7942865 - 2² = 7942861 is a prime.

It is a d-powerful number, because it can be written as 7⁸ + 9³ + 4 + 2¹¹ + 8⁷ + 6 + 5⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7942861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7520 + ... + 8510.

It is an arithmetic number, because the mean of its divisors is an integer number (684480).

Almost surely, 2^7942865 is an apocalyptic number.

It is an amenable number.

7942865 is a deficient number, since it is larger than the sum of its proper divisors (3008815).

7942865 is a wasteful number, since it uses less digits than its factorization.

7942865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232.

The product of its digits is 120960, while the sum is 41.

The square root of 7942865 is about 2818.3088900970. The cubic root of 7942865 is about 199.5227370061.

The spelling of 7942865 in words is "seven million, nine hundred forty-two thousand, eight hundred sixty-five".