12406203 has 20 divisors (see below), whose sum is σ = 18735640. Its totient is φ = 8180352.

The previous prime is 12406193. The next prime is 12406213. The reversal of 12406203 is 30260421.

It is a happy number.

12406203 is a `hidden beast` number, since 1 + 2 + 40 + 620 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (12406193) and next prime (12406213).

It is not a de Polignac number, because 12406203 - 2⁶ = 12406139 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 (12406213) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7068 + ... + 8646.

It is an arithmetic number, because the mean of its divisors is an integer number (936782).

Almost surely, 2^12406203 is an apocalyptic number.

12406203 is a deficient number, since it is larger than the sum of its proper divisors (6329437).

12406203 is an equidigital number, since it uses as much as digits as its factorization.

12406203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688 (or 1679 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 12406203 is about 3522.2440290247. The cubic root of 12406203 is about 231.4974941690.

Adding to 12406203 its reverse (30260421), we get a palindrome (42666624).

The spelling of 12406203 in words is "twelve million, four hundred six thousand, two hundred three".