442001223 has 24 divisors (see below), whose sum is σ = 657154368. Its totient is φ = 286068672.

The previous prime is 442001201. The next prime is 442001227. The reversal of 442001223 is 322100244.

442001223 is a `hidden beast` number, since 442 + 0 + 0 + 1 + 223 = 666.

It is not a de Polignac number, because 442001223 - 2⁵ = 442001191 is a prime.

It is a super-2 number, since 2×442001223² = 390730162266991458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442001196 and 442001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442001227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184290 + ... + 186672.

It is an arithmetic number, because the mean of its divisors is an integer number (27381432).

Almost surely, 2^442001223 is an apocalyptic number.

442001223 is a deficient number, since it is larger than the sum of its proper divisors (215153145).

442001223 is a wasteful number, since it uses less digits than its factorization.

442001223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983 (or 2980 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 442001223 is about 21023.8251276974. The cubic root of 442001223 is about 761.7418628799.

Adding to 442001223 its reverse (322100244), we get a palindrome (764101467).

The spelling of 442001223 in words is "four hundred forty-two million, one thousand, two hundred twenty-three".