442123307 has 2 divisors, whose sum is σ = 442123308. Its totient is φ = 442123306.

The previous prime is 442123261. The next prime is 442123343. The reversal of 442123307 is 703321244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442123307 - 2⁶ = 442123243 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (442123207) 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, 221061653 + 221061654.

It is an arithmetic number, because the mean of its divisors is an integer number (221061654).

Almost surely, 2^442123307 is an apocalyptic number.

442123307 is a deficient number, since it is larger than the sum of its proper divisors (1).

442123307 is an equidigital number, since it uses as much as digits as its factorization.

442123307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 442123307 is about 21026.7283950690. The cubic root of 442123307 is about 761.8119893320.

The spelling of 442123307 in words is "four hundred forty-two million, one hundred twenty-three thousand, three hundred seven".