12144401 has 6 divisors (see below), whose sum is σ = 12817602. Its totient is φ = 11504880.

The previous prime is 12144389. The next prime is 12144403. The reversal of 12144401 is 10444121.

12144401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11566801 + 577600 = 3401^2 + 760^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12144401 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 12144401.

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 5 ways as a sum of consecutive naturals, for example, 16460 + ... + 17181.

It is an arithmetic number, because the mean of its divisors is an integer number (2136267).

Almost surely, 2^12144401 is an apocalyptic number.

It is an amenable number.

12144401 is a deficient number, since it is larger than the sum of its proper divisors (673201).

12144401 is an equidigital number, since it uses as much as digits as its factorization.

12144401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33679 (or 33660 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 12144401 is about 3484.8817770478. The cubic root of 12144401 is about 229.8575109877.

Adding to 12144401 its reverse (10444121), we get a palindrome (22588522).

The spelling of 12144401 in words is "twelve million, one hundred forty-four thousand, four hundred one".