7864242 has 16 divisors (see below), whose sum is σ = 15987072. Its totient is φ = 2578320.

The previous prime is 7864201. The next prime is 7864243. The reversal of 7864242 is 2424687.

It is not an unprimeable number, because it can be changed into a prime (7864243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10378 + ... + 11109.

It is an arithmetic number, because the mean of its divisors is an integer number (999192).

Almost surely, 2^7864242 is an apocalyptic number.

7864242 is an abundant number, since it is smaller than the sum of its proper divisors (8122830).

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

7864242 is a wasteful number, since it uses less digits than its factorization.

7864242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21553.

The product of its digits is 21504, while the sum is 33.

The square root of 7864242 is about 2804.3255873739. The cubic root of 7864242 is about 198.8622229241.

The spelling of 7864242 in words is "seven million, eight hundred sixty-four thousand, two hundred forty-two".