442223 has 6 divisors (see below), whose sum is σ = 456336. Its totient is φ = 428352.

The previous prime is 442217. The next prime is 442229. The reversal of 442223 is 322244.

It is an interprime number because it is at equal distance from previous prime (442217) and next prime (442229).

It is not a de Polignac number, because 442223 - 2⁴ = 442207 is a prime.

It is a super-2 number, since 2×442223² = 391122363458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442223.

It is not an unprimeable number, because it can be changed into a prime (442229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4511 + ... + 4607.

It is an arithmetic number, because the mean of its divisors is an integer number (76056).

2⁴⁴²²²³ is an apocalyptic number.

442223 is a deficient number, since it is larger than the sum of its proper divisors (14113).

442223 is an frugal number, since it uses more digits than its factorization.

442223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 144 counting only the distinct ones).

The product of its digits is 384, while the sum is 17.

The square root of 442223 is about 664.9984962389. The cubic root of 442223 is about 76.1869244562.

Adding to 442223 its reverse (322244), we get a palindrome (764467).

The spelling of 442223 in words is "four hundred forty-two thousand, two hundred twenty-three", and thus it is an iban number.