12009503 has 8 divisors (see below), whose sum is σ = 13135440. Its totient is φ = 10889280.

The previous prime is 12009499. The next prime is 12009521. The reversal of 12009503 is 30590021.

12009503 is digitally balanced in base 2, 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 a cyclic number.

It is not a de Polignac number, because 12009503 - 2² = 12009499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12009523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3833 + ... + 6221.

It is an arithmetic number, because the mean of its divisors is an integer number (1641930).

Almost surely, 2^12009503 is an apocalyptic number.

12009503 is a deficient number, since it is larger than the sum of its proper divisors (1125937).

12009503 is a wasteful number, since it uses less digits than its factorization.

12009503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 12009503 is about 3465.4729835911. The cubic root of 12009503 is about 229.0032671171.

Adding to 12009503 its reverse (30590021), we get a palindrome (42599524).

The spelling of 12009503 in words is "twelve million, nine thousand, five hundred three".