442867423 has 2 divisors, whose sum is σ = 442867424. Its totient is φ = 442867422.

The previous prime is 442867351. The next prime is 442867427. The reversal of 442867423 is 324768244.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442867423 is a prime.

It is a super-2 number, since 2×442867423² = 392263108709321858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442867427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221433711 + 221433712.

It is an arithmetic number, because the mean of its divisors is an integer number (221433712).

Almost surely, 2^442867423 is an apocalyptic number.

442867423 is a deficient number, since it is larger than the sum of its proper divisors (1).

442867423 is an equidigital number, since it uses as much as digits as its factorization.

442867423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 40.

The square root of 442867423 is about 21044.4154824980. The cubic root of 442867423 is about 762.2391392176.

The spelling of 442867423 in words is "four hundred forty-two million, eight hundred sixty-seven thousand, four hundred twenty-three".