12403420 has 12 divisors (see below), whose sum is σ = 26047224. Its totient is φ = 4961360.

The previous prime is 12403397. The next prime is 12403423. The reversal of 12403420 is 2430421.

It is a junction number, because it is equal to n+sod(n) for n = 12403394 and 12403403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310066 + ... + 310105.

It is an arithmetic number, because the mean of its divisors is an integer number (2170602).

Almost surely, 2^12403420 is an apocalyptic number.

12403420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12403420 is an abundant number, since it is smaller than the sum of its proper divisors (13643804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12403420 is a wasteful number, since it uses less digits than its factorization.

12403420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620180 (or 620178 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 12403420 is about 3521.8489462213. The cubic root of 12403420 is about 231.4801827830.

Adding to 12403420 its reverse (2430421), we get a palindrome (14833841).

The spelling of 12403420 in words is "twelve million, four hundred three thousand, four hundred twenty".