842864 has 20 divisors (see below), whose sum is σ = 1781880. Its totient is φ = 383040.

The previous prime is 842857. The next prime is 842869. The reversal of 842864 is 468248.

842864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 842864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2219 + ... + 2570.

It is an arithmetic number, because the mean of its divisors is an integer number (89094).

2⁸⁴²⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

842864 is an abundant number, since it is smaller than the sum of its proper divisors (939016).

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

842864 is a wasteful number, since it uses less digits than its factorization.

842864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808 (or 4802 counting only the distinct ones).

The product of its digits is 12288, while the sum is 32.

The square root of 842864 is about 918.0762495566. The cubic root of 842864 is about 94.4609918975.

The spelling of 842864 in words is "eight hundred forty-two thousand, eight hundred sixty-four".