442000223 has 32 divisors (see below), whose sum is σ = 550056960. Its totient is φ = 346832640.

The previous prime is 442000219. The next prime is 442000243. The reversal of 442000223 is 322000244.

It is not a de Polignac number, because 442000223 - 2² = 442000219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442000243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 639308 + ... + 639998.

It is an arithmetic number, because the mean of its divisors is an integer number (17189280).

Almost surely, 2^442000223 is an apocalyptic number.

442000223 is a deficient number, since it is larger than the sum of its proper divisors (108056737).

442000223 is a wasteful number, since it uses less digits than its factorization.

442000223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887.

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

The square root of 442000223 is about 21023.8013451421. The cubic root of 442000223 is about 761.7412884151.

Adding to 442000223 its reverse (322000244), we get a palindrome (764000467).

The spelling of 442000223 in words is "four hundred forty-two million, two hundred twenty-three", and thus it is an aban number.