42334056053521 has 2 divisors, whose sum is σ = 42334056053522. Its totient is φ = 42334056053520.

The previous prime is 42334056053437. The next prime is 42334056053557. The reversal of 42334056053521 is 12535065043324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34975857293521 + 7358198760000 = 5914039^2 + 2712600^2 .

It is a cyclic number.

It is not a de Polignac number, because 42334056053521 - 2³⁵ = 42299696315153 is a prime.

It is not a weakly prime, because it can be changed into another prime (42334056053561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21167028026760 + 21167028026761.

It is an arithmetic number, because the mean of its divisors is an integer number (21167028026761).

Almost surely, 2^{42334056053521} is an apocalyptic number.

It is an amenable number.

42334056053521 is a deficient number, since it is larger than the sum of its proper divisors (1).

42334056053521 is an equidigital number, since it uses as much as digits as its factorization.

42334056053521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296000, while the sum is 43.

The spelling of 42334056053521 in words is "forty-two trillion, three hundred thirty-four billion, fifty-six million, fifty-three thousand, five hundred twenty-one".