12144467 has 4 divisors (see below), whose sum is σ = 12536256. Its totient is φ = 11752680.

The previous prime is 12144463. The next prime is 12144481. The reversal of 12144467 is 76444121.

It is a happy number.

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 12144467 - 2² = 12144463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12144463) 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, 195848 + ... + 195909.

It is an arithmetic number, because the mean of its divisors is an integer number (3134064).

Almost surely, 2^12144467 is an apocalyptic number.

12144467 is a deficient number, since it is larger than the sum of its proper divisors (391789).

12144467 is an equidigital number, since it uses as much as digits as its factorization.

12144467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391788.

The product of its digits is 5376, while the sum is 29.

The square root of 12144467 is about 3484.8912465097. The cubic root of 12144467 is about 229.8579273817.

Adding to 12144467 its reverse (76444121), we get a palindrome (88588588).

The spelling of 12144467 in words is "twelve million, one hundred forty-four thousand, four hundred sixty-seven".