1042831 has 4 divisors (see below), whose sum is σ = 1104192. Its totient is φ = 981472.

The previous prime is 1042829. The next prime is 1042837. The reversal of 1042831 is 1382401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1042831 - 2¹ = 1042829 is a prime.

It is a super-2 number, since 2×1042831² = 2174992989122, which contains 22 as substring.

It is a Duffinian number.

1042831 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1042799 and 1042808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30655 + ... + 30688.

It is an arithmetic number, because the mean of its divisors is an integer number (276048).

2^1042831 is an apocalyptic number.

1042831 is a deficient number, since it is larger than the sum of its proper divisors (61361).

1042831 is an equidigital number, since it uses as much as digits as its factorization.

1042831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61360.

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

The square root of 1042831 is about 1021.1909713663. The cubic root of 1042831 is about 101.4077883188.

The spelling of 1042831 in words is "one million, forty-two thousand, eight hundred thirty-one".