12032403 has 4 divisors (see below), whose sum is σ = 16043208. Its totient is φ = 8021600.

The previous prime is 12032399. The next prime is 12032417. The reversal of 12032403 is 30423021.

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

It is a cyclic number.

It is not a de Polignac number, because 12032403 - 2² = 12032399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12032203) 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, 2005398 + ... + 2005403.

It is an arithmetic number, because the mean of its divisors is an integer number (4010802).

Almost surely, 2^12032403 is an apocalyptic number.

12032403 is a deficient number, since it is larger than the sum of its proper divisors (4010805).

12032403 is an equidigital number, since it uses as much as digits as its factorization.

12032403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010804.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 12032403 is about 3468.7754323392. The cubic root of 12032403 is about 229.1487309526.

Adding to 12032403 its reverse (30423021), we get a palindrome (42455424).

It can be divided in two parts, 120 and 32403, that added together give a palindrome (32523).

The spelling of 12032403 in words is "twelve million, thirty-two thousand, four hundred three".