842758 has 16 divisors (see below), whose sum is σ = 1530144. Its totient is φ = 339840.

The previous prime is 842747. The next prime is 842759. The reversal of 842758 is 857248.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842759) 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, 1533 + ... + 2008.

It is an arithmetic number, because the mean of its divisors is an integer number (95634).

2⁸⁴²⁷⁵⁸ is an apocalyptic number.

842758 is a deficient number, since it is larger than the sum of its proper divisors (687386).

842758 is a wasteful number, since it uses less digits than its factorization.

842758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567.

The product of its digits is 17920, while the sum is 34.

The square root of 842758 is about 918.0185183317. The cubic root of 842758 is about 94.4570318735.

Subtracting from 842758 its sum of digits (34), we obtain a square (842724 = 918²).

It can be divided in two parts, 842 and 758, that added together give a square (1600 = 40²).

The spelling of 842758 in words is "eight hundred forty-two thousand, seven hundred fifty-eight".