42242424431 has 2 divisors, whose sum is σ = 42242424432. Its totient is φ = 42242424430.

The previous prime is 42242424397. The next prime is 42242424437. The reversal of 42242424431 is 13442424224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42242424431 is a prime.

It is a super-2 number, since 2×42242424431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42242424437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21121212215 + 21121212216.

It is an arithmetic number, because the mean of its divisors is an integer number (21121212216).

Almost surely, 2^42242424431 is an apocalyptic number.

42242424431 is a deficient number, since it is larger than the sum of its proper divisors (1).

42242424431 is an equidigital number, since it uses as much as digits as its factorization.

42242424431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49152, while the sum is 32.

Adding to 42242424431 its reverse (13442424224), we get a palindrome (55684848655).

The spelling of 42242424431 in words is "forty-two billion, two hundred forty-two million, four hundred twenty-four thousand, four hundred thirty-one".