442220400073 has 2 divisors, whose sum is σ = 442220400074. Its totient is φ = 442220400072.

The previous prime is 442220400031. The next prime is 442220400131. The reversal of 442220400073 is 370004022244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237000527929 + 205219872144 = 486827^2 + 453012^2 .

It is a cyclic number.

It is not a de Polignac number, because 442220400073 - 2⁹ = 442220399561 is a prime.

It is not a weakly prime, because it can be changed into another prime (442220430073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221110200036 + 221110200037.

It is an arithmetic number, because the mean of its divisors is an integer number (221110200037).

Almost surely, 2^442220400073 is an apocalyptic number.

It is an amenable number.

442220400073 is a deficient number, since it is larger than the sum of its proper divisors (1).

442220400073 is an equidigital number, since it uses as much as digits as its factorization.

442220400073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 28.

The spelling of 442220400073 in words is "four hundred forty-two billion, two hundred twenty million, four hundred thousand, seventy-three".