442375217 has 2 divisors, whose sum is σ = 442375218. Its totient is φ = 442375216.

The previous prime is 442375147. The next prime is 442375229. The reversal of 442375217 is 712573244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 296666176 + 145709041 = 17224^2 + 12071^2 .

It is a cyclic number.

It is not a de Polignac number, because 442375217 - 2¹⁰ = 442374193 is a prime.

It is not a weakly prime, because it can be changed into another prime (442375247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221187608 + 221187609.

It is an arithmetic number, because the mean of its divisors is an integer number (221187609).

Almost surely, 2^442375217 is an apocalyptic number.

It is an amenable number.

442375217 is a deficient number, since it is larger than the sum of its proper divisors (1).

442375217 is an equidigital number, since it uses as much as digits as its factorization.

442375217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 35.

The square root of 442375217 is about 21032.7177749334. The cubic root of 442375217 is about 761.9566485396.

The spelling of 442375217 in words is "four hundred forty-two million, three hundred seventy-five thousand, two hundred seventeen".