831142 has 12 divisors (see below), whose sum is σ = 1350540. Its totient is φ = 383448.

The previous prime is 831139. The next prime is 831161. The reversal of 831142 is 241138.

It is a congruent number.

It is an unprimeable number.

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, 892 + ... + 1567.

It is an arithmetic number, because the mean of its divisors is an integer number (112545).

2⁸³¹¹⁴² is an apocalyptic number.

831142 is a deficient number, since it is larger than the sum of its proper divisors (519398).

831142 is a wasteful number, since it uses less digits than its factorization.

831142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487 (or 2474 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 831142 is about 911.6698963989. The cubic root of 831142 is about 94.0210455368.

It can be divided in two parts, 83 and 1142, that added together give a triangular number (1225 = T₄₉).

The spelling of 831142 in words is "eight hundred thirty-one thousand, one hundred forty-two".