42942056599601 has 2 divisors, whose sum is σ = 42942056599602. Its totient is φ = 42942056599600.

The previous prime is 42942056599591. The next prime is 42942056599679. The reversal of 42942056599601 is 10699565024924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29948518930576 + 12993537669025 = 5472524^2 + 3604655^2 .

It is a cyclic number.

It is not a de Polignac number, because 42942056599601 - 2¹⁸ = 42942056337457 is a prime.

It is not a weakly prime, because it can be changed into another prime (42942056599201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21471028299800 + 21471028299801.

It is an arithmetic number, because the mean of its divisors is an integer number (21471028299801).

Almost surely, 2^{42942056599601} is an apocalyptic number.

It is an amenable number.

42942056599601 is a deficient number, since it is larger than the sum of its proper divisors (1).

42942056599601 is an equidigital number, since it uses as much as digits as its factorization.

42942056599601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41990400, while the sum is 62.

The spelling of 42942056599601 in words is "forty-two trillion, nine hundred forty-two billion, fifty-six million, five hundred ninety-nine thousand, six hundred one".