442142223 has 8 divisors (see below), whose sum is σ = 596985600. Its totient is φ = 291030168.

The previous prime is 442142209. The next prime is 442142231. The reversal of 442142223 is 322241244.

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

It is not a de Polignac number, because 442142223 - 2⁶ = 442142159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442142193 and 442142202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442142203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932553 + ... + 933026.

It is an arithmetic number, because the mean of its divisors is an integer number (74623200).

Almost surely, 2^442142223 is an apocalyptic number.

442142223 is a deficient number, since it is larger than the sum of its proper divisors (154843377).

442142223 is a wasteful number, since it uses less digits than its factorization.

442142223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865661.

The product of its digits is 3072, while the sum is 24.

The square root of 442142223 is about 21027.1781987027. The cubic root of 442142223 is about 761.8228537446.

Adding to 442142223 its reverse (322241244), we get a palindrome (764383467).

The spelling of 442142223 in words is "four hundred forty-two million, one hundred forty-two thousand, two hundred twenty-three".