4243423 has 4 divisors (see below), whose sum is σ = 4251240. Its totient is φ = 4235608.

The previous prime is 4243411. The next prime is 4243427. The reversal of 4243423 is 3243424.

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 4243423 - 2⁵ = 4243391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4243394 and 4243403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243427) 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, 3028 + ... + 4201.

It is an arithmetic number, because the mean of its divisors is an integer number (1062810).

Almost surely, 2^4243423 is an apocalyptic number.

4243423 is a deficient number, since it is larger than the sum of its proper divisors (7817).

4243423 is an equidigital number, since it uses as much as digits as its factorization.

4243423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7816.

The product of its digits is 2304, while the sum is 22.

The square root of 4243423 is about 2059.9570383870. The cubic root of 4243423 is about 161.8969903489.

Adding to 4243423 its reverse (3243424), we get a palindrome (7486847).

Subtracting from 4243423 its reverse (3243424), we obtain a palindrome (999999).

The spelling of 4243423 in words is "four million, two hundred forty-three thousand, four hundred twenty-three".