13242403 has 4 divisors (see below), whose sum is σ = 13249768. Its totient is φ = 13235040.

The previous prime is 13242379. The next prime is 13242407. The reversal of 13242403 is 30424231.

13242403 is digitally balanced in base 3, 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13242403 is a prime.

It is a super-2 number, since 2×13242403² = 350722474428818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13242407) 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, 1000 + ... + 5242.

It is an arithmetic number, because the mean of its divisors is an integer number (3312442).

Almost surely, 2^13242403 is an apocalyptic number.

13242403 is a deficient number, since it is larger than the sum of its proper divisors (7365).

13242403 is an equidigital number, since it uses as much as digits as its factorization.

13242403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7364.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 13242403 is about 3639.0112668141. The cubic root of 13242403 is about 236.5859410810.

Adding to 13242403 its reverse (30424231), we get a palindrome (43666634).

The spelling of 13242403 in words is "thirteen million, two hundred forty-two thousand, four hundred three".