42075000997 has 2 divisors, whose sum is σ = 42075000998. Its totient is φ = 42075000996.

The previous prime is 42075000977. The next prime is 42075001027. The reversal of 42075000997 is 79900057024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42073804161 + 1196836 = 205119^2 + 1094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42075000997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42075000917) 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, 21037500498 + 21037500499.

It is an arithmetic number, because the mean of its divisors is an integer number (21037500499).

Almost surely, 2^42075000997 is an apocalyptic number.

It is an amenable number.

42075000997 is a deficient number, since it is larger than the sum of its proper divisors (1).

42075000997 is an equidigital number, since it uses as much as digits as its factorization.

42075000997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 43.

The spelling of 42075000997 in words is "forty-two billion, seventy-five million, nine hundred ninety-seven", and thus it is an aban number.