842755 has 8 divisors (see below), whose sum is σ = 1036224. Its totient is φ = 657600.

The previous prime is 842747. The next prime is 842759. The reversal of 842755 is 557248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 842755 - 2³ = 842747 is a prime.

It is a Duffinian number.

842755 is a lucky 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, 1851 + ... + 2260.

It is an arithmetic number, because the mean of its divisors is an integer number (129528).

2⁸⁴²⁷⁵⁵ is an apocalyptic number.

842755 is a deficient number, since it is larger than the sum of its proper divisors (193469).

842755 is a wasteful number, since it uses less digits than its factorization.

842755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4157.

The product of its digits is 11200, while the sum is 31.

The square root of 842755 is about 918.0168843763. The cubic root of 842755 is about 94.4569197925.

Subtracting from 842755 its sum of digits (31), we obtain a square (842724 = 918²).

The spelling of 842755 in words is "eight hundred forty-two thousand, seven hundred fifty-five".