42507140398117 has 2 divisors, whose sum is σ = 42507140398118. Its totient is φ = 42507140398116.

The previous prime is 42507140398057. The next prime is 42507140398139. The reversal of 42507140398117 is 71189304170524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42393238198081 + 113902200036 = 6511009^2 + 337494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42507140398117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42507140398517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21253570199058 + 21253570199059.

It is an arithmetic number, because the mean of its divisors is an integer number (21253570199059).

Almost surely, 2^{42507140398117} is an apocalyptic number.

It is an amenable number.

42507140398117 is a deficient number, since it is larger than the sum of its proper divisors (1).

42507140398117 is an equidigital number, since it uses as much as digits as its factorization.

42507140398117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 42507140398117 in words is "forty-two trillion, five hundred seven billion, one hundred forty million, three hundred ninety-eight thousand, one hundred seventeen".