442430207 has 2 divisors, whose sum is σ = 442430208. Its totient is φ = 442430206.

The previous prime is 442430173. The next prime is 442430213. The reversal of 442430207 is 702034244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442430207 - 2⁸ = 442429951 is a prime.

It is a super-4 number, since 4×442430207⁴ (a number of 36 digits) contains 4444 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442430267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221215103 + 221215104.

It is an arithmetic number, because the mean of its divisors is an integer number (221215104).

Almost surely, 2^442430207 is an apocalyptic number.

442430207 is a deficient number, since it is larger than the sum of its proper divisors (1).

442430207 is an equidigital number, since it uses as much as digits as its factorization.

442430207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 442430207 is about 21034.0249833454. The cubic root of 442430207 is about 761.9882192202.

The spelling of 442430207 in words is "four hundred forty-two million, four hundred thirty thousand, two hundred seven".