444242143 has 4 divisors (see below), whose sum is σ = 446347768. Its totient is φ = 442136520.

The previous prime is 444242119. The next prime is 444242153. The reversal of 444242143 is 341242444.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444242143 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 (444242153) 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, 1052496 + ... + 1052917.

It is an arithmetic number, because the mean of its divisors is an integer number (111586942).

Almost surely, 2^444242143 is an apocalyptic number.

444242143 is a deficient number, since it is larger than the sum of its proper divisors (2105625).

444242143 is a wasteful number, since it uses less digits than its factorization.

444242143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105624.

The product of its digits is 12288, while the sum is 28.

The square root of 444242143 is about 21077.0525216407. The cubic root of 444242143 is about 763.0270221239.

Adding to 444242143 its reverse (341242444), we get a palindrome (785484587).

The spelling of 444242143 in words is "four hundred forty-four million, two hundred forty-two thousand, one hundred forty-three".