12423403 has 6 divisors (see below), whose sum is σ = 12532884. Its totient is φ = 12314844.

The previous prime is 12423401. The next prime is 12423407. The reversal of 12423403 is 30432421.

It is not a de Polignac number, because 12423403 - 2¹ = 12423401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12423401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19000 + ... + 19642.

It is an arithmetic number, because the mean of its divisors is an integer number (2088814).

Almost surely, 2^12423403 is an apocalyptic number.

12423403 is a deficient number, since it is larger than the sum of its proper divisors (109481).

12423403 is an frugal number, since it uses more digits than its factorization.

12423403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 782 counting only the distinct ones).

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

The square root of 12423403 is about 3524.6848086035. The cubic root of 12423403 is about 231.6044277250.

Adding to 12423403 its reverse (30432421), we get a palindrome (42855824).

The spelling of 12423403 in words is "twelve million, four hundred twenty-three thousand, four hundred three".