12440541 has 8 divisors (see below), whose sum is σ = 16758784. Its totient is φ = 8208000.

The previous prime is 12440537. The next prime is 12440551. The reversal of 12440541 is 14504421.

It is a happy number.

12440541 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12440541 - 2² = 12440537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21085 + ... + 21666.

It is an arithmetic number, because the mean of its divisors is an integer number (2094848).

Almost surely, 2^12440541 is an apocalyptic number.

It is an amenable number.

12440541 is a deficient number, since it is larger than the sum of its proper divisors (4318243).

12440541 is an equidigital number, since it uses as much as digits as its factorization.

12440541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42851.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 12440541 is about 3527.1151101148. The cubic root of 12440541 is about 231.7108777023.

Adding to 12440541 its reverse (14504421), we get a palindrome (26944962).

The spelling of 12440541 in words is "twelve million, four hundred forty thousand, five hundred forty-one".