442041223 has 4 divisors (see below), whose sum is σ = 476044408. Its totient is φ = 408038040.

The previous prime is 442041221. The next prime is 442041239. The reversal of 442041223 is 322140244.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442041223 - 2¹ = 442041221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442041194 and 442041203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442041221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17001573 + ... + 17001598.

It is an arithmetic number, because the mean of its divisors is an integer number (119011102).

Almost surely, 2^442041223 is an apocalyptic number.

442041223 is a deficient number, since it is larger than the sum of its proper divisors (34003185).

442041223 is a wasteful number, since it uses less digits than its factorization.

442041223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34003184.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 442041223 is about 21024.7764078480. The cubic root of 442041223 is about 761.7648407616.

Adding to 442041223 its reverse (322140244), we get a palindrome (764181467).

The spelling of 442041223 in words is "four hundred forty-two million, forty-one thousand, two hundred twenty-three".