12423204 has 18 divisors (see below), whose sum is σ = 31403190. Its totient is φ = 4141056.

The previous prime is 12423167. The next prime is 12423211. The reversal of 12423204 is 40232421.

It can be written as a sum of positive squares in only one way, i.e., 9290304 + 3132900 = 3048^2 + 1770^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172509 + ... + 172580.

Almost surely, 2^12423204 is an apocalyptic number.

It is an amenable number.

12423204 is an abundant number, since it is smaller than the sum of its proper divisors (18979986).

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

12423204 is a wasteful number, since it uses less digits than its factorization.

12423204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345099 (or 345094 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12423204 is about 3524.6565790159. The cubic root of 12423204 is about 231.6031910932.

Adding to 12423204 its reverse (40232421), we get a palindrome (52655625).

The spelling of 12423204 in words is "twelve million, four hundred twenty-three thousand, two hundred four".