442010111 has 2 divisors, whose sum is σ = 442010112. Its totient is φ = 442010110.

The previous prime is 442010057. The next prime is 442010119. The reversal of 442010111 is 111010244.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442010111 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442010119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221005055 + 221005056.

It is an arithmetic number, because the mean of its divisors is an integer number (221005056).

Almost surely, 2^442010111 is an apocalyptic number.

442010111 is a deficient number, since it is larger than the sum of its proper divisors (1).

442010111 is an equidigital number, since it uses as much as digits as its factorization.

442010111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 442010111 is about 21024.0365058663. The cubic root of 442010111 is about 761.7469686850.

Adding to 442010111 its reverse (111010244), we get a palindrome (553020355).

The spelling of 442010111 in words is "four hundred forty-two million, ten thousand, one hundred eleven".