444142111 has 4 divisors (see below), whose sum is σ = 507590992. Its totient is φ = 380693232.

The previous prime is 444142109. The next prime is 444142199. The reversal of 444142111 is 111241444.

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 444142111 - 2¹ = 444142109 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 (444140111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31724430 + ... + 31724443.

It is an arithmetic number, because the mean of its divisors is an integer number (126897748).

Almost surely, 2^444142111 is an apocalyptic number.

444142111 is a deficient number, since it is larger than the sum of its proper divisors (63448881).

444142111 is an equidigital number, since it uses as much as digits as its factorization.

444142111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63448880.

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

The square root of 444142111 is about 21074.6793807166. The cubic root of 444142111 is about 762.9697464167.

Adding to 444142111 its reverse (111241444), we get a palindrome (555383555).

The spelling of 444142111 in words is "four hundred forty-four million, one hundred forty-two thousand, one hundred eleven".