12144423 has 8 divisors (see below), whose sum is σ = 16219008. Its totient is φ = 8083064.

The previous prime is 12144413. The next prime is 12144463. The reversal of 12144423 is 32444121.

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 12144423 - 2¹⁸ = 11882279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12144423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144403) 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, 915 + ... + 5012.

It is an arithmetic number, because the mean of its divisors is an integer number (2027376).

Almost surely, 2^12144423 is an apocalyptic number.

12144423 is a deficient number, since it is larger than the sum of its proper divisors (4074585).

12144423 is an equidigital number, since it uses as much as digits as its factorization.

12144423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6613.

The product of its digits is 768, while the sum is 21.

The square root of 12144423 is about 3484.8849335380. The cubic root of 12144423 is about 229.8576497858.

Adding to 12144423 its reverse (32444121), we get a palindrome (44588544).

It can be divided in two parts, 121 and 44423, that added together give a palindrome (44544).

The spelling of 12144423 in words is "twelve million, one hundred forty-four thousand, four hundred twenty-three".