12420236 has 12 divisors (see below), whose sum is σ = 22485120. Its totient is φ = 5995920.

The previous prime is 12420229. The next prime is 12420257. The reversal of 12420236 is 63202421.

It is a super-4 number, since 4×12420236⁴ (a number of 29 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53420 + ... + 53651.

It is an arithmetic number, because the mean of its divisors is an integer number (1873760).

Almost surely, 2^12420236 is an apocalyptic number.

It is an amenable number.

12420236 is a deficient number, since it is larger than the sum of its proper divisors (10064884).

12420236 is a wasteful number, since it uses less digits than its factorization.

12420236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107104 (or 107102 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 12420236 is about 3524.2355199390. The cubic root of 12420236 is about 231.5847456900.

Adding to 12420236 its reverse (63202421), we get a palindrome (75622657).

The spelling of 12420236 in words is "twelve million, four hundred twenty thousand, two hundred thirty-six".