12451403 has 4 divisors (see below), whose sum is σ = 13106760. Its totient is φ = 11796048.

The previous prime is 12451399. The next prime is 12451409. The reversal of 12451403 is 30415421.

12451403 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.

It is a cyclic number.

It is not a de Polignac number, because 12451403 - 2² = 12451399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12451409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327650 + ... + 327687.

It is an arithmetic number, because the mean of its divisors is an integer number (3276690).

Almost surely, 2^12451403 is an apocalyptic number.

12451403 is a deficient number, since it is larger than the sum of its proper divisors (655357).

12451403 is an equidigital number, since it uses as much as digits as its factorization.

12451403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655356.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12451403 is about 3528.6545594603. The cubic root of 12451403 is about 231.7782946903.

Adding to 12451403 its reverse (30415421), we get a palindrome (42866824).

The spelling of 12451403 in words is "twelve million, four hundred fifty-one thousand, four hundred three".