42244205461 has 2 divisors, whose sum is σ = 42244205462. Its totient is φ = 42244205460.

The previous prime is 42244205449. The next prime is 42244205537. The reversal of 42244205461 is 16450244224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40162564836 + 2081640625 = 200406^2 + 45625^2 .

It is a cyclic number.

It is not a de Polignac number, because 42244205461 - 2¹⁹ = 42243681173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42244205441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21122102730 + 21122102731.

It is an arithmetic number, because the mean of its divisors is an integer number (21122102731).

Almost surely, 2^42244205461 is an apocalyptic number.

It is an amenable number.

42244205461 is a deficient number, since it is larger than the sum of its proper divisors (1).

42244205461 is an equidigital number, since it uses as much as digits as its factorization.

42244205461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 42244205461 its reverse (16450244224), we get a palindrome (58694449685).

The spelling of 42244205461 in words is "forty-two billion, two hundred forty-four million, two hundred five thousand, four hundred sixty-one".