442428907513 has 2 divisors, whose sum is σ = 442428907514. Its totient is φ = 442428907512.

The previous prime is 442428907477. The next prime is 442428907589. The reversal of 442428907513 is 315709824244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419679821929 + 22749085584 = 647827^2 + 150828^2 .

It is a cyclic number.

It is not a de Polignac number, because 442428907513 - 2³⁷ = 304989954041 is a prime.

It is not a weakly prime, because it can be changed into another prime (442428907313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221214453756 + 221214453757.

It is an arithmetic number, because the mean of its divisors is an integer number (221214453757).

Almost surely, 2^442428907513 is an apocalyptic number.

It is an amenable number.

442428907513 is a deficient number, since it is larger than the sum of its proper divisors (1).

442428907513 is an equidigital number, since it uses as much as digits as its factorization.

442428907513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 442428907513 in words is "four hundred forty-two billion, four hundred twenty-eight million, nine hundred seven thousand, five hundred thirteen".