842858 has 16 divisors (see below), whose sum is σ = 1342656. Its totient is φ = 396000.

The previous prime is 842857. The next prime is 842869. The reversal of 842858 is 858248.

It is not an unprimeable number, because it can be changed into a prime (842857) 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 7 ways as a sum of consecutive naturals, for example, 3233 + ... + 3483.

It is an arithmetic number, because the mean of its divisors is an integer number (83916).

2⁸⁴²⁸⁵⁸ is an apocalyptic number.

842858 is a deficient number, since it is larger than the sum of its proper divisors (499798).

842858 is a wasteful number, since it uses less digits than its factorization.

842858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its digits is 20480, while the sum is 35.

The square root of 842858 is about 918.0729818484. The cubic root of 842858 is about 94.4607677540.

The spelling of 842858 in words is "eight hundred forty-two thousand, eight hundred fifty-eight".