42045344431 has 2 divisors, whose sum is σ = 42045344432. Its totient is φ = 42045344430.

The previous prime is 42045344347. The next prime is 42045344437. The reversal of 42045344431 is 13444354024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42045344431 - 2⁷ = 42045344303 is a prime.

It is a super-2 number, since 2×42045344431² (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 (42045344437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21022672215 + 21022672216.

It is an arithmetic number, because the mean of its divisors is an integer number (21022672216).

Almost surely, 2^42045344431 is an apocalyptic number.

42045344431 is a deficient number, since it is larger than the sum of its proper divisors (1).

42045344431 is an equidigital number, since it uses as much as digits as its factorization.

42045344431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 42045344431 its reverse (13444354024), we get a palindrome (55489698455).

The spelling of 42045344431 in words is "forty-two billion, forty-five million, three hundred forty-four thousand, four hundred thirty-one".