842859 has 32 divisors (see below), whose sum is σ = 1382400. Its totient is φ = 505440.

The previous prime is 842857. The next prime is 842869. The reversal of 842859 is 958248.

It is not a de Polignac number, because 842859 - 2¹ = 842857 is a prime.

It is a super-2 number, since 2×842859² = 1420822587762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (842857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15877 + ... + 15929.

It is an arithmetic number, because the mean of its divisors is an integer number (43200).

2⁸⁴²⁸⁵⁹ is an apocalyptic number.

842859 is a deficient number, since it is larger than the sum of its proper divisors (539541).

842859 is a wasteful number, since it uses less digits than its factorization.

842859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 106 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 842859 is about 918.0735264672. The cubic root of 842859 is about 94.4608051113.

The spelling of 842859 in words is "eight hundred forty-two thousand, eight hundred fifty-nine".