851942 has 32 divisors (see below), whose sum is σ = 1634304. Its totient is φ = 324000.

The previous prime is 851899. The next prime is 851953. The reversal of 851942 is 249158.

It is a congruent number.

It is an unprimeable number.

851942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5567 + ... + 5717.

It is an arithmetic number, because the mean of its divisors is an integer number (51072).

851942 is a Friedman number, since it can be written as (4^8-2)*(9+5-1), using all its digits and the basic arithmetic operations.

2⁸⁵¹⁹⁴² is an apocalyptic number.

851942 is a deficient number, since it is larger than the sum of its proper divisors (782362).

851942 is a wasteful number, since it uses less digits than its factorization.

851942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204.

The product of its digits is 2880, while the sum is 29.

The square root of 851942 is about 923.0070422267. The cubic root of 851942 is about 94.7989098250.

The spelling of 851942 in words is "eight hundred fifty-one thousand, nine hundred forty-two".