12127441 has 4 divisors (see below), whose sum is σ = 12142900. Its totient is φ = 12111984.

The previous prime is 12127433. The next prime is 12127447. The reversal of 12127441 is 14472121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14472121 = 2789 ⋅5189.

It can be written as a sum of positive squares in 2 ways, for example, as 4426816 + 7700625 = 2104^2 + 2775^2 .

It is a cyclic number.

It is not a de Polignac number, because 12127441 - 2³ = 12127433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12127447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6486 + ... + 8143.

It is an arithmetic number, because the mean of its divisors is an integer number (3035725).

Almost surely, 2^12127441 is an apocalyptic number.

It is an amenable number.

12127441 is a deficient number, since it is larger than the sum of its proper divisors (15459).

12127441 is an equidigital number, since it uses as much as digits as its factorization.

12127441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15458.

The product of its digits is 448, while the sum is 22.

The square root of 12127441 is about 3482.4475588299. The cubic root of 12127441 is about 229.7504602974.

Adding to 12127441 its reverse (14472121), we get a palindrome (26599562).

The spelling of 12127441 in words is "twelve million, one hundred twenty-seven thousand, four hundred forty-one".