442043443 has 4 divisors (see below), whose sum is σ = 442347880. Its totient is φ = 441739008.

The previous prime is 442043411. The next prime is 442043447. The reversal of 442043443 is 344340244.

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 442043443 - 2⁵ = 442043411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442043447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150030 + ... + 152947.

It is an arithmetic number, because the mean of its divisors is an integer number (110586970).

Almost surely, 2^442043443 is an apocalyptic number.

442043443 is a deficient number, since it is larger than the sum of its proper divisors (304437).

442043443 is a wasteful number, since it uses less digits than its factorization.

442043443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304436.

The product of its (nonzero) digits is 18432, while the sum is 28.

The square root of 442043443 is about 21024.8292026356. The cubic root of 442043443 is about 761.7661159934.

Adding to 442043443 its reverse (344340244), we get a palindrome (786383687).

The spelling of 442043443 in words is "four hundred forty-two million, forty-three thousand, four hundred forty-three".