42440884441 has 2 divisors, whose sum is σ = 42440884442. Its totient is φ = 42440884440.

The previous prime is 42440884433. The next prime is 42440884471. The reversal of 42440884441 is 14448804424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40078438416 + 2362446025 = 200196^2 + 48605^2 .

It is a cyclic number.

It is not a de Polignac number, because 42440884441 - 2³ = 42440884433 is a prime.

It is not a weakly prime, because it can be changed into another prime (42440884471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21220442220 + 21220442221.

It is an arithmetic number, because the mean of its divisors is an integer number (21220442221).

Almost surely, 2^42440884441 is an apocalyptic number.

It is an amenable number.

42440884441 is a deficient number, since it is larger than the sum of its proper divisors (1).

42440884441 is an equidigital number, since it uses as much as digits as its factorization.

42440884441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524288, while the sum is 43.

The spelling of 42440884441 in words is "forty-two billion, four hundred forty million, eight hundred eighty-four thousand, four hundred forty-one".