42507626731 has 2 divisors, whose sum is σ = 42507626732. Its totient is φ = 42507626730.

The previous prime is 42507626647. The next prime is 42507626753. The reversal of 42507626731 is 13762670524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42507626731 - 2¹⁵ = 42507593963 is a prime.

It is a super-2 number, since 2×42507626731² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42507626131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21253813365 + 21253813366.

It is an arithmetic number, because the mean of its divisors is an integer number (21253813366).

Almost surely, 2^42507626731 is an apocalyptic number.

42507626731 is a deficient number, since it is larger than the sum of its proper divisors (1).

42507626731 is an equidigital number, since it uses as much as digits as its factorization.

42507626731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 42507626731 in words is "forty-two billion, five hundred seven million, six hundred twenty-six thousand, seven hundred thirty-one".