423220423 has 8 divisors (see below), whose sum is σ = 456571728. Its totient is φ = 390808704.

The previous prime is 423220411. The next prime is 423220451. The reversal of 423220423 is 324022324.

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

It is a cyclic number.

It is not a de Polignac number, because 423220423 - 2⁹ = 423219911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423220394 and 423220403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423220223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233961 + ... + 235762.

It is an arithmetic number, because the mean of its divisors is an integer number (57071466).

Almost surely, 2^423220423 is an apocalyptic number.

423220423 is a deficient number, since it is larger than the sum of its proper divisors (33351305).

423220423 is a wasteful number, since it uses less digits than its factorization.

423220423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469793.

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

The square root of 423220423 is about 20572.3217697955. The cubic root of 423220423 is about 750.7964416453.

Adding to 423220423 its reverse (324022324), we get a palindrome (747242747).

The spelling of 423220423 in words is "four hundred twenty-three million, two hundred twenty thousand, four hundred twenty-three".