842872 has 8 divisors (see below), whose sum is σ = 1580400. Its totient is φ = 421432.

The previous prime is 842869. The next prime is 842879. The reversal of 842872 is 278248.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842879) 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 as a sum of consecutive naturals, namely, 52672 + ... + 52687.

It is an arithmetic number, because the mean of its divisors is an integer number (197550).

2⁸⁴²⁸⁷² is an apocalyptic number.

It is an amenable number.

842872 is a deficient number, since it is larger than the sum of its proper divisors (737528).

842872 is a wasteful number, since it uses less digits than its factorization.

842872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105365 (or 105361 counting only the distinct ones).

The product of its digits is 7168, while the sum is 31.

The square root of 842872 is about 918.0806064829. The cubic root of 842872 is about 94.4612907537.

The spelling of 842872 in words is "eight hundred forty-two thousand, eight hundred seventy-two".