12420112 has 10 divisors (see below), whose sum is σ = 24063998. Its totient is φ = 6210048.

The previous prime is 12420097. The next prime is 12420131. The reversal of 12420112 is 21102421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9265936 + 3154176 = 3044^2 + 1776^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12420092 and 12420101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388113 + ... + 388144.

Almost surely, 2^12420112 is an apocalyptic number.

It is an amenable number.

12420112 is a deficient number, since it is larger than the sum of its proper divisors (11643886).

12420112 is an equidigital number, since it uses as much as digits as its factorization.

12420112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776265 (or 776259 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 12420112 is about 3524.2179274273. The cubic root of 12420112 is about 231.5839749960.

Adding to 12420112 its reverse (21102421), we get a palindrome (33522533).

The spelling of 12420112 in words is "twelve million, four hundred twenty thousand, one hundred twelve".