442079243 has 2 divisors, whose sum is σ = 442079244. Its totient is φ = 442079242.

The previous prime is 442079207. The next prime is 442079291. The reversal of 442079243 is 342970244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442079243 - 2²⁸ = 173643787 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (442073243) 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, 221039621 + 221039622.

It is an arithmetic number, because the mean of its divisors is an integer number (221039622).

Almost surely, 2^442079243 is an apocalyptic number.

442079243 is a deficient number, since it is larger than the sum of its proper divisors (1).

442079243 is an equidigital number, since it uses as much as digits as its factorization.

442079243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 442079243 is about 21025.6805597346. The cubic root of 442079243 is about 761.7866799532.

The spelling of 442079243 in words is "four hundred forty-two million, seventy-nine thousand, two hundred forty-three".