442406023 has 2 divisors, whose sum is σ = 442406024. Its totient is φ = 442406022.

The previous prime is 442405967. The next prime is 442406047. The reversal of 442406023 is 320604244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442406023 - 2⁹ = 442405511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442406123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221203011 + 221203012.

It is an arithmetic number, because the mean of its divisors is an integer number (221203012).

Almost surely, 2^442406023 is an apocalyptic number.

442406023 is a deficient number, since it is larger than the sum of its proper divisors (1).

442406023 is an equidigital number, since it uses as much as digits as its factorization.

442406023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 442406023 is about 21033.4500974044. The cubic root of 442406023 is about 761.9743351028.

The spelling of 442406023 in words is "four hundred forty-two million, four hundred six thousand, twenty-three".