12045518 has 4 divisors (see below), whose sum is σ = 18068280. Its totient is φ = 6022758.

The previous prime is 12045497. The next prime is 12045521. The reversal of 12045518 is 81554021.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3011378 + ... + 3011381.

It is an arithmetic number, because the mean of its divisors is an integer number (4517070).

Almost surely, 2^12045518 is an apocalyptic number.

12045518 is a deficient number, since it is larger than the sum of its proper divisors (6022762).

12045518 is an equidigital number, since it uses as much as digits as its factorization.

12045518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6022761.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 12045518 is about 3470.6653540784. The cubic root of 12045518 is about 229.2319560677.

Adding to 12045518 its reverse (81554021), we get a palindrome (93599539).

The spelling of 12045518 in words is "twelve million, forty-five thousand, five hundred eighteen".