42252663641 has 2 divisors, whose sum is σ = 42252663642. Its totient is φ = 42252663640.

The previous prime is 42252663589. The next prime is 42252663647. The reversal of 42252663641 is 14636625224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29211937225 + 13040726416 = 170915^2 + 114196^2 .

It is a cyclic number.

It is not a de Polignac number, because 42252663641 - 2³⁴ = 25072794457 is a prime.

It is not a weakly prime, because it can be changed into another prime (42252663647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21126331820 + 21126331821.

It is an arithmetic number, because the mean of its divisors is an integer number (21126331821).

Almost surely, 2^42252663641 is an apocalyptic number.

It is an amenable number.

42252663641 is a deficient number, since it is larger than the sum of its proper divisors (1).

42252663641 is an equidigital number, since it uses as much as digits as its factorization.

42252663641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 41.

The spelling of 42252663641 in words is "forty-two billion, two hundred fifty-two million, six hundred sixty-three thousand, six hundred forty-one".