442203423 has 8 divisors (see below), whose sum is σ = 589964928. Its totient is φ = 294622104.

The previous prime is 442203373. The next prime is 442203431. The reversal of 442203423 is 324302244.

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

It is not a de Polignac number, because 442203423 - 2⁹ = 442202911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442203393 and 442203402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442203493) 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, 39211 + ... + 49212.

It is an arithmetic number, because the mean of its divisors is an integer number (73745616).

Almost surely, 2^442203423 is an apocalyptic number.

442203423 is a deficient number, since it is larger than the sum of its proper divisors (147761505).

442203423 is a wasteful number, since it uses less digits than its factorization.

442203423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90093.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 442203423 is about 21028.6334078085. The cubic root of 442203423 is about 761.8580018676.

Adding to 442203423 its reverse (324302244), we get a palindrome (766505667).

The spelling of 442203423 in words is "four hundred forty-two million, two hundred three thousand, four hundred twenty-three".