12420709 has 8 divisors (see below), whose sum is σ = 14463360. Its totient is φ = 10445136.

The previous prime is 12420703. The next prime is 12420719. The reversal of 12420709 is 90702421.

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

It is a cyclic number.

It is not a de Polignac number, because 12420709 - 2¹¹ = 12418661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16369 + ... + 17110.

It is an arithmetic number, because the mean of its divisors is an integer number (1807920).

Almost surely, 2^12420709 is an apocalyptic number.

It is an amenable number.

12420709 is a deficient number, since it is larger than the sum of its proper divisors (2042651).

12420709 is an equidigital number, since it uses as much as digits as its factorization.

12420709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33539.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 12420709 is about 3524.3026260524. The cubic root of 12420709 is about 231.5876854676.

The spelling of 12420709 in words is "twelve million, four hundred twenty thousand, seven hundred nine".