224020423 has 4 divisors (see below), whose sum is σ = 244385928. Its totient is φ = 203654920.

The previous prime is 224020417. The next prime is 224020427. The reversal of 224020423 is 324020422.

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 224020423 - 2²¹ = 221923271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 224020423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224020427) 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, 10182736 + ... + 10182757.

It is an arithmetic number, because the mean of its divisors is an integer number (61096482).

Almost surely, 2^224020423 is an apocalyptic number.

224020423 is a deficient number, since it is larger than the sum of its proper divisors (20365505).

224020423 is a wasteful number, since it uses less digits than its factorization.

224020423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20365504.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 224020423 is about 14967.3118160878. The cubic root of 224020423 is about 607.3362510334.

Adding to 224020423 its reverse (324020422), we get a palindrome (548040845).

Subtracting 224020423 from its reverse (324020422), we obtain a palindrome (99999999).

The spelling of 224020423 in words is "two hundred twenty-four million, twenty thousand, four hundred twenty-three".