442430233 has 8 divisors (see below), whose sum is σ = 521945600. Its totient is φ = 366992640.

The previous prime is 442430213. The next prime is 442430251. The reversal of 442430233 is 332034244.

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

It is a de Polignac number, because none of the positive numbers 2^k-442430233 is a prime.

It is a super-2 number, since 2×442430233² = 391489022144868578, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442430198 and 442430207.

It is not an unprimeable number, because it can be changed into a prime (442430213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1019208 + ... + 1019641.

It is an arithmetic number, because the mean of its divisors is an integer number (65243200).

Almost surely, 2^442430233 is an apocalyptic number.

It is an amenable number.

442430233 is a deficient number, since it is larger than the sum of its proper divisors (79515367).

442430233 is a wasteful number, since it uses less digits than its factorization.

442430233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038887.

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

The square root of 442430233 is about 21034.0256013917. The cubic root of 442430233 is about 761.9882341466.

Adding to 442430233 its reverse (332034244), we get a palindrome (774464477).

The spelling of 442430233 in words is "four hundred forty-two million, four hundred thirty thousand, two hundred thirty-three".