442144111 has 4 divisors (see below), whose sum is σ = 461367792. Its totient is φ = 422920432.

The previous prime is 442144099. The next prime is 442144151. The reversal of 442144111 is 111441244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442144111 - 2⁷ = 442143983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442144151) 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 in 3 ways as a sum of consecutive naturals, for example, 9611806 + ... + 9611851.

It is an arithmetic number, because the mean of its divisors is an integer number (115341948).

Almost surely, 2^442144111 is an apocalyptic number.

442144111 is a deficient number, since it is larger than the sum of its proper divisors (19223681).

442144111 is a wasteful number, since it uses less digits than its factorization.

442144111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19223680.

The product of its digits is 512, while the sum is 22.

The square root of 442144111 is about 21027.2230929336. The cubic root of 442144111 is about 761.8239381012.

Adding to 442144111 its reverse (111441244), we get a palindrome (553585355).

The spelling of 442144111 in words is "four hundred forty-two million, one hundred forty-four thousand, one hundred eleven".