1042403231 has 4 divisors (see below), whose sum is σ = 1078348200. Its totient is φ = 1006458264.

The previous prime is 1042403207. The next prime is 1042403233. The reversal of 1042403231 is 1323042401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1323042401 = 3637 ⋅363773.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042403231 is a prime.

It is a super-2 number, since 2×1042403231² = 2173208991998478722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042403233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17972441 + ... + 17972498.

It is an arithmetic number, because the mean of its divisors is an integer number (269587050).

Almost surely, 2^1042403231 is an apocalyptic number.

1042403231 is a deficient number, since it is larger than the sum of its proper divisors (35944969).

1042403231 is an equidigital number, since it uses as much as digits as its factorization.

1042403231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35944968.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1042403231 is about 32286.2700075435. The cubic root of 1042403231 is about 1013.9392060649.

Adding to 1042403231 its reverse (1323042401), we get a palindrome (2365445632).

The spelling of 1042403231 in words is "one billion, forty-two million, four hundred three thousand, two hundred thirty-one".