12443161 has 4 divisors (see below), whose sum is σ = 12984192. Its totient is φ = 11902132.

The previous prime is 12443153. The next prime is 12443191. The reversal of 12443161 is 16134421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16134421 = 367 ⋅43963.

It is not a de Polignac number, because 12443161 - 2³ = 12443153 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12443191) 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, 270481 + ... + 270526.

It is an arithmetic number, because the mean of its divisors is an integer number (3246048).

Almost surely, 2^12443161 is an apocalyptic number.

It is an amenable number.

12443161 is a deficient number, since it is larger than the sum of its proper divisors (541031).

12443161 is an equidigital number, since it uses as much as digits as its factorization.

12443161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541030.

The product of its digits is 576, while the sum is 22.

The square root of 12443161 is about 3527.4864989111. The cubic root of 12443161 is about 231.7271428011.

Adding to 12443161 its reverse (16134421), we get a palindrome (28577582).

The spelling of 12443161 in words is "twelve million, four hundred forty-three thousand, one hundred sixty-one".