442564343 has 8 divisors (see below), whose sum is σ = 481522608. Its totient is φ = 404308224.

The previous prime is 442564327. The next prime is 442564357. The reversal of 442564343 is 343465244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442564343 - 2⁴ = 442564327 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 (442564303) 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 in 7 ways as a sum of consecutive naturals, for example, 174221 + ... + 176742.

It is an arithmetic number, because the mean of its divisors is an integer number (60190326).

Almost surely, 2^442564343 is an apocalyptic number.

442564343 is a deficient number, since it is larger than the sum of its proper divisors (38958265).

442564343 is a wasteful number, since it uses less digits than its factorization.

442564343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351073.

The product of its digits is 138240, while the sum is 35.

The square root of 442564343 is about 21037.2132897872. The cubic root of 442564343 is about 762.0652179743.

Subtracting from 442564343 its reverse (343465244), we obtain a palindrome (99099099).

The spelling of 442564343 in words is "four hundred forty-two million, five hundred sixty-four thousand, three hundred forty-three".