842756 has 12 divisors (see below), whose sum is σ = 1500240. Its totient is φ = 414120.

The previous prime is 842747. The next prime is 842759. The reversal of 842756 is 657248.

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 not an unprimeable number, because it can be changed into a prime (842759) by changing a digit.

842756 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1550 + ... + 2021.

It is an arithmetic number, because the mean of its divisors is an integer number (125020).

2⁸⁴²⁷⁵⁶ is an apocalyptic number.

It is an amenable number.

842756 is a deficient number, since it is larger than the sum of its proper divisors (657484).

842756 is a wasteful number, since it uses less digits than its factorization.

842756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3634 (or 3632 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 842756 is about 918.0174290284. The cubic root of 842756 is about 94.4569571529.

Subtracting from 842756 its sum of digits (32), we obtain a square (842724 = 918²).

The spelling of 842756 in words is "eight hundred forty-two thousand, seven hundred fifty-six".