12420503 has 8 divisors (see below), whose sum is σ = 12735360. Its totient is φ = 12109240.

The previous prime is 12420487. The next prime is 12420511. The reversal of 12420503 is 30502421.

12420503 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 a cyclic number.

It is not a de Polignac number, because 12420503 - 2⁴ = 12420487 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 (12420703) 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, 6926 + ... + 8532.

It is an arithmetic number, because the mean of its divisors is an integer number (1591920).

Almost surely, 2^12420503 is an apocalyptic number.

12420503 is a deficient number, since it is larger than the sum of its proper divisors (314857).

12420503 is a wasteful number, since it uses less digits than its factorization.

12420503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 12420503 is about 3524.2734002912. The cubic root of 12420503 is about 231.5864051508.

Adding to 12420503 its reverse (30502421), we get a palindrome (42922924).

The spelling of 12420503 in words is "twelve million, four hundred twenty thousand, five hundred three".