12020403 has 16 divisors (see below), whose sum is σ = 16494080. Its totient is φ = 7783776.

The previous prime is 12020389. The next prime is 12020417. The reversal of 12020403 is 30402021.

12020403 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12020389) and next prime (12020417).

It is not a de Polignac number, because 12020403 - 2¹⁶ = 11954867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12020443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15501 + ... + 16257.

It is an arithmetic number, because the mean of its divisors is an integer number (1030880).

Almost surely, 2^12020403 is an apocalyptic number.

12020403 is a deficient number, since it is larger than the sum of its proper divisors (4473677).

12020403 is an equidigital number, since it uses as much as digits as its factorization.

12020403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 12020403 is about 3467.0452838116. The cubic root of 12020403 is about 229.0725284017.

Adding to 12020403 its reverse (30402021), we get a palindrome (42422424).

The spelling of 12020403 in words is "twelve million, twenty thousand, four hundred three".