442223423 has 8 divisors (see below), whose sum is σ = 475403520. Its totient is φ = 410033880.

The previous prime is 442223399. The next prime is 442223443. The reversal of 442223423 is 324322244.

It is a happy number.

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 442223423 - 2⁶ = 442223359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442223392 and 442223401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442223443) 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, 246713 + ... + 248498.

It is an arithmetic number, because the mean of its divisors is an integer number (59425440).

Almost surely, 2^442223423 is an apocalyptic number.

442223423 is a deficient number, since it is larger than the sum of its proper divisors (33180097).

442223423 is a wasteful number, since it uses less digits than its factorization.

442223423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495277.

The product of its digits is 9216, while the sum is 26.

The square root of 442223423 is about 21029.1089445083. The cubic root of 442223423 is about 761.8694874792.

Adding to 442223423 its reverse (324322244), we get a palindrome (766545667).

It can be divided in two parts, 442223 and 423, that multiplied together give a square (187060329 = 13677²).

The spelling of 442223423 in words is "four hundred forty-two million, two hundred twenty-three thousand, four hundred twenty-three".