12440545 has 16 divisors (see below), whose sum is σ = 16454592. Its totient is φ = 8971200.

The previous prime is 12440537. The next prime is 12440551. The reversal of 12440545 is 54504421.

It is a happy number.

It is not a de Polignac number, because 12440545 - 2³ = 12440537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570 + ... + 5020.

It is an arithmetic number, because the mean of its divisors is an integer number (1028412).

Almost surely, 2^12440545 is an apocalyptic number.

It is an amenable number.

12440545 is a deficient number, since it is larger than the sum of its proper divisors (4014047).

12440545 is a wasteful number, since it uses less digits than its factorization.

12440545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 12440545 is about 3527.1156771504. The cubic root of 12440545 is about 231.7109025362.

Adding to 12440545 its reverse (54504421), we get a palindrome (66944966).

The spelling of 12440545 in words is "twelve million, four hundred forty thousand, five hundred forty-five".