42745365431 has 2 divisors, whose sum is σ = 42745365432. Its totient is φ = 42745365430.

The previous prime is 42745365413. The next prime is 42745365433. The reversal of 42745365431 is 13456354724.

Together with previous prime (42745365413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42745365431 - 2¹⁸ = 42745103287 is a prime.

It is a super-2 number, since 2×42745365431² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 42745365433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42745365433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21372682715 + 21372682716.

It is an arithmetic number, because the mean of its divisors is an integer number (21372682716).

Almost surely, 2^42745365431 is an apocalyptic number.

42745365431 is a deficient number, since it is larger than the sum of its proper divisors (1).

42745365431 is an equidigital number, since it uses as much as digits as its factorization.

42745365431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 44.

The spelling of 42745365431 in words is "forty-two billion, seven hundred forty-five million, three hundred sixty-five thousand, four hundred thirty-one".