442430111 has 2 divisors, whose sum is σ = 442430112. Its totient is φ = 442430110.

The previous prime is 442430101. The next prime is 442430123. The reversal of 442430111 is 111034244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442430111 - 2¹⁸ = 442167967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442430101) 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, 221215055 + 221215056.

It is an arithmetic number, because the mean of its divisors is an integer number (221215056).

Almost surely, 2^442430111 is an apocalyptic number.

442430111 is a deficient number, since it is larger than the sum of its proper divisors (1).

442430111 is an equidigital number, since it uses as much as digits as its factorization.

442430111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 442430111 is about 21034.0227013284. The cubic root of 442430111 is about 761.9881641073.

Adding to 442430111 its reverse (111034244), we get a palindrome (553464355).

The spelling of 442430111 in words is "four hundred forty-two million, four hundred thirty thousand, one hundred eleven".