42256256641441 has 2 divisors, whose sum is σ = 42256256641442. Its totient is φ = 42256256641440.

The previous prime is 42256256641381. The next prime is 42256256641499. The reversal of 42256256641441 is 14414665265224.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31987180029841 + 10269076611600 = 5655721^2 + 3204540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42256256641441 is a prime.

It is not a weakly prime, because it can be changed into another prime (42256256641141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21128128320720 + 21128128320721.

It is an arithmetic number, because the mean of its divisors is an integer number (21128128320721).

Almost surely, 2^{42256256641441} is an apocalyptic number.

It is an amenable number.

42256256641441 is a deficient number, since it is larger than the sum of its proper divisors (1).

42256256641441 is an equidigital number, since it uses as much as digits as its factorization.

42256256641441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11059200, while the sum is 52.

The spelling of 42256256641441 in words is "forty-two trillion, two hundred fifty-six billion, two hundred fifty-six million, six hundred forty-one thousand, four hundred forty-one".