442340233 has 4 divisors (see below), whose sum is σ = 445717008. Its totient is φ = 438963460.

The previous prime is 442340191. The next prime is 442340237. The reversal of 442340233 is 332043244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442340233 - 2²⁵ = 408785801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442340198 and 442340207.

It is not an unprimeable number, because it can be changed into a prime (442340237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688191 + ... + 1688452.

It is an arithmetic number, because the mean of its divisors is an integer number (111429252).

Almost surely, 2^442340233 is an apocalyptic number.

It is an amenable number.

442340233 is a deficient number, since it is larger than the sum of its proper divisors (3376775).

442340233 is a wasteful number, since it uses less digits than its factorization.

442340233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376774.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 442340233 is about 21031.8861018217. The cubic root of 442340233 is about 761.9365622772.

Adding to 442340233 its reverse (332043244), we get a palindrome (774383477).

The spelling of 442340233 in words is "four hundred forty-two million, three hundred forty thousand, two hundred thirty-three".