12420446 has 4 divisors (see below), whose sum is σ = 18630672. Its totient is φ = 6210222.

The previous prime is 12420413. The next prime is 12420451. The reversal of 12420446 is 64402421.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3105110 + ... + 3105113.

It is an arithmetic number, because the mean of its divisors is an integer number (4657668).

Almost surely, 2^12420446 is an apocalyptic number.

12420446 is a deficient number, since it is larger than the sum of its proper divisors (6210226).

12420446 is an equidigital number, since it uses as much as digits as its factorization.

12420446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210225.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 12420446 is about 3524.2653135086. The cubic root of 12420446 is about 231.5860508858.

Adding to 12420446 its reverse (64402421), we get a palindrome (76822867).

The spelling of 12420446 in words is "twelve million, four hundred twenty thousand, four hundred forty-six".