12042403 has 4 divisors (see below), whose sum is σ = 12099688. Its totient is φ = 11985120.

The previous prime is 12042391. The next prime is 12042419. The reversal of 12042403 is 30424021.

12042403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12042403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12043403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28326 + ... + 28747.

It is an arithmetic number, because the mean of its divisors is an integer number (3024922).

Almost surely, 2^12042403 is an apocalyptic number.

12042403 is a deficient number, since it is larger than the sum of its proper divisors (57285).

12042403 is an equidigital number, since it uses as much as digits as its factorization.

12042403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57284.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 12042403 is about 3470.2165638473. The cubic root of 12042403 is about 229.2121943852.

Adding to 12042403 its reverse (30424021), we get a palindrome (42466424).

The spelling of 12042403 in words is "twelve million, forty-two thousand, four hundred three".