847842 has 8 divisors (see below), whose sum is σ = 1695696. Its totient is φ = 282612.

The previous prime is 847817. The next prime is 847853. The reversal of 847842 is 248748.

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

847842 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 847842.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70648 + ... + 70659.

It is an arithmetic number, because the mean of its divisors is an integer number (211962).

2⁸⁴⁷⁸⁴² is an apocalyptic number.

847842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

847842 is a wasteful number, since it uses less digits than its factorization.

847842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141312.

The product of its digits is 14336, while the sum is 33.

The square root of 847842 is about 920.7833621433. The cubic root of 847842 is about 94.6465908849.

The spelling of 847842 in words is "eight hundred forty-seven thousand, eight hundred forty-two".