42443022340261 has 2 divisors, whose sum is σ = 42443022340262. Its totient is φ = 42443022340260.

The previous prime is 42443022340157. The next prime is 42443022340289. The reversal of 42443022340261 is 16204322034424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41167943250625 + 1275079089636 = 6416225^2 + 1129194^2 .

It is a cyclic number.

It is not a de Polignac number, because 42443022340261 - 2²⁵ = 42442988785829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42443022340261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42443028340261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21221511170130 + 21221511170131.

It is an arithmetic number, because the mean of its divisors is an integer number (21221511170131).

Almost surely, 2^{42443022340261} is an apocalyptic number.

It is an amenable number.

42443022340261 is a deficient number, since it is larger than the sum of its proper divisors (1).

42443022340261 is an equidigital number, since it uses as much as digits as its factorization.

42443022340261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 42443022340261 its reverse (16204322034424), we get a palindrome (58647344374685).

The spelling of 42443022340261 in words is "forty-two trillion, four hundred forty-three billion, twenty-two million, three hundred forty thousand, two hundred sixty-one".