442643342 has 8 divisors (see below), whose sum is σ = 698910600. Its totient is φ = 209673144.

The previous prime is 442643293. The next prime is 442643347. The reversal of 442643342 is 243346244.

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

It is a junction number, because it is equal to n+sod(n) for n = 442643299 and 442643308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442643347) 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, 5824217 + ... + 5824292.

It is an arithmetic number, because the mean of its divisors is an integer number (87363825).

Almost surely, 2^442643342 is an apocalyptic number.

442643342 is a deficient number, since it is larger than the sum of its proper divisors (256267258).

442643342 is a wasteful number, since it uses less digits than its factorization.

442643342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11648530.

The product of its digits is 55296, while the sum is 32.

The square root of 442643342 is about 21039.0908073519. The cubic root of 442643342 is about 762.1105588830.

Adding to 442643342 its reverse (243346244), we get a palindrome (685989586).

The spelling of 442643342 in words is "four hundred forty-two million, six hundred forty-three thousand, three hundred forty-two".