842947 has 6 divisors (see below), whose sum is σ = 980628. Its totient is φ = 722484.

The previous prime is 842939. The next prime is 842951. The reversal of 842947 is 749248.

It is a happy number.

It is not a de Polignac number, because 842947 - 2³ = 842939 is a prime.

It is a Duffinian number.

842947 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (842957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8553 + ... + 8650.

It is an arithmetic number, because the mean of its divisors is an integer number (163438).

2⁸⁴²⁹⁴⁷ is an apocalyptic number.

842947 is a deficient number, since it is larger than the sum of its proper divisors (137681).

842947 is a wasteful number, since it uses less digits than its factorization.

842947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17217 (or 17210 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 842947 is about 918.1214516609. The cubic root of 842947 is about 94.4640924392.

The spelling of 842947 in words is "eight hundred forty-two thousand, nine hundred forty-seven".