1042631 has 2 divisors, whose sum is σ = 1042632. Its totient is φ = 1042630.

The previous prime is 1042619. The next prime is 1042633. The reversal of 1042631 is 1362401.

It is a strong prime.

It is an emirp because it is prime and its reverse (1362401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042631 is a prime.

It is a super-2 number, since 2×1042631² = 2174158804322, which contains 22 as substring.

Together with 1042633, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₈₁₆₀₂ and since 1042631 and 81602 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521315 + 521316.

It is an arithmetic number, because the mean of its divisors is an integer number (521316).

2^1042631 is an apocalyptic number.

1042631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042631 is an equidigital number, since it uses as much as digits as its factorization.

1042631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1042631 is about 1021.0930417939. The cubic root of 1042631 is about 101.4013050521.

The spelling of 1042631 in words is "one million, forty-two thousand, six hundred thirty-one".