442063213 has 2 divisors, whose sum is σ = 442063214. Its totient is φ = 442063212.

The previous prime is 442063207. The next prime is 442063217. The reversal of 442063213 is 312360244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 347934409 + 94128804 = 18653^2 + 9702^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442063213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442063217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221031606 + 221031607.

It is an arithmetic number, because the mean of its divisors is an integer number (221031607).

Almost surely, 2^442063213 is an apocalyptic number.

It is an amenable number.

442063213 is a deficient number, since it is larger than the sum of its proper divisors (1).

442063213 is an equidigital number, since it uses as much as digits as its factorization.

442063213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 442063213 is about 21025.2993557761. The cubic root of 442063213 is about 761.7774722616. Note that the first 3 decimals are identical.

The spelling of 442063213 in words is "four hundred forty-two million, sixty-three thousand, two hundred thirteen".