442144511 has 2 divisors, whose sum is σ = 442144512. Its totient is φ = 442144510.

The previous prime is 442144489. The next prime is 442144513. The reversal of 442144511 is 115441244.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442144511 is a prime.

Together with 442144513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442144513) 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, 221072255 + 221072256.

It is an arithmetic number, because the mean of its divisors is an integer number (221072256).

Almost surely, 2^442144511 is an apocalyptic number.

442144511 is a deficient number, since it is larger than the sum of its proper divisors (1).

442144511 is an equidigital number, since it uses as much as digits as its factorization.

442144511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560, while the sum is 26.

The square root of 442144511 is about 21027.2326044109. The cubic root of 442144511 is about 761.8241678374.

Adding to 442144511 its reverse (115441244), we get a palindrome (557585755).

The spelling of 442144511 in words is "four hundred forty-two million, one hundred forty-four thousand, five hundred eleven".