123560240017 has 2 divisors, whose sum is σ = 123560240018. Its totient is φ = 123560240016.

The previous prime is 123560240003. The next prime is 123560240033. The reversal of 123560240017 is 710042065321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122975761041 + 584478976 = 350679^2 + 24176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123560240017 is a prime.

It is not a weakly prime, because it can be changed into another prime (123560240087) 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, 61780120008 + 61780120009.

It is an arithmetic number, because the mean of its divisors is an integer number (61780120009).

Almost surely, 2^123560240017 is an apocalyptic number.

It is an amenable number.

123560240017 is a deficient number, since it is larger than the sum of its proper divisors (1).

123560240017 is an equidigital number, since it uses as much as digits as its factorization.

123560240017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 123560240017 in words is "one hundred twenty-three billion, five hundred sixty million, two hundred forty thousand, seventeen".