14423323421 has 12 divisors (see below), whose sum is σ = 15732181332. Its totient is φ = 13216634496.

The previous prime is 14423323403. The next prime is 14423323427. The reversal of 14423323421 is 12432332441.

It can be written as a sum of positive squares in 6 ways, for example, as 140683321 + 14282640100 = 11861^2 + 119510^2 .

It is a de Polignac number, because none of the positive numbers 2^k-14423323421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14423323427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288326 + ... + 334631.

It is an arithmetic number, because the mean of its divisors is an integer number (1311015111).

Almost surely, 2^14423323421 is an apocalyptic number.

It is an amenable number.

14423323421 is a deficient number, since it is larger than the sum of its proper divisors (1308857911).

14423323421 is a wasteful number, since it uses less digits than its factorization.

14423323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623120 (or 623107 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

Adding to 14423323421 its reverse (12432332441), we get a palindrome (26855655862).

The spelling of 14423323421 in words is "fourteen billion, four hundred twenty-three million, three hundred twenty-three thousand, four hundred twenty-one".