442311073 has 2 divisors, whose sum is σ = 442311074. Its totient is φ = 442311072.

The previous prime is 442311047. The next prime is 442311101. The reversal of 442311073 is 370113244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 360734049 + 81577024 = 18993^2 + 9032^2 .

It is a cyclic number.

It is not a de Polignac number, because 442311073 - 2²⁵ = 408756641 is a prime.

It is a super-2 number, since 2×442311073² = 391278170596822658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (442311673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221155536 + 221155537.

It is an arithmetic number, because the mean of its divisors is an integer number (221155537).

Almost surely, 2^442311073 is an apocalyptic number.

It is an amenable number.

442311073 is a deficient number, since it is larger than the sum of its proper divisors (1).

442311073 is an equidigital number, since it uses as much as digits as its factorization.

442311073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 442311073 is about 21031.1928572775. The cubic root of 442311073 is about 761.9198190882.

The spelling of 442311073 in words is "four hundred forty-two million, three hundred eleven thousand, seventy-three".