42457737757 has 2 divisors, whose sum is σ = 42457737758. Its totient is φ = 42457737756.

The previous prime is 42457737719. The next prime is 42457737827. The reversal of 42457737757 is 75773775424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42111554521 + 346183236 = 205211^2 + 18606^2 .

It is a cyclic number.

It is not a de Polignac number, because 42457737757 - 2⁷ = 42457737629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42457797757) 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, 21228868878 + 21228868879.

It is an arithmetic number, because the mean of its divisors is an integer number (21228868879).

Almost surely, 2^42457737757 is an apocalyptic number.

It is an amenable number.

42457737757 is a deficient number, since it is larger than the sum of its proper divisors (1).

42457737757 is an equidigital number, since it uses as much as digits as its factorization.

42457737757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40336800, while the sum is 58.

The spelling of 42457737757 in words is "forty-two billion, four hundred fifty-seven million, seven hundred thirty-seven thousand, seven hundred fifty-seven".