1042242431 has 2 divisors, whose sum is σ = 1042242432. Its totient is φ = 1042242430.

The previous prime is 1042242407. The next prime is 1042242449. The reversal of 1042242431 is 1342422401.

It is a strong prime.

It is an emirp because it is prime and its reverse (1342422401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042242431 - 2⁶ = 1042242367 is a prime.

It is a super-2 number, since 2×1042242431² = 2172538569953579522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1042242397 and 1042242406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042247431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521121215 + 521121216.

It is an arithmetic number, because the mean of its divisors is an integer number (521121216).

Almost surely, 2^1042242431 is an apocalyptic number.

1042242431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042242431 is an equidigital number, since it uses as much as digits as its factorization.

1042242431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1042242431 is about 32283.7796888778. The cubic root of 1042242431 is about 1013.8870669938.

Adding to 1042242431 its reverse (1342422401), we get a palindrome (2384664832).

The spelling of 1042242431 in words is "one billion, forty-two million, two hundred forty-two thousand, four hundred thirty-one".