12420426 has 8 divisors (see below), whose sum is σ = 24840864. Its totient is φ = 4140140.

The previous prime is 12420413. The next prime is 12420451. The reversal of 12420426 is 62402421.

12420426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

12420426 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035030 + ... + 1035041.

It is an arithmetic number, because the mean of its divisors is an integer number (3105108).

Almost surely, 2^12420426 is an apocalyptic number.

12420426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12420426 is a wasteful number, since it uses less digits than its factorization.

12420426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070076.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 12420426 is about 3524.2624760367. The cubic root of 12420426 is about 231.5859265821.

Adding to 12420426 its reverse (62402421), we get a palindrome (74822847).

The spelling of 12420426 in words is "twelve million, four hundred twenty thousand, four hundred twenty-six".