12421715 has 8 divisors (see below), whose sum is σ = 15420240. Its totient is φ = 9594592.

The previous prime is 12421709. The next prime is 12421727. The reversal of 12421715 is 51712421.

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

It is not a de Polignac number, because 12421715 - 2⁴ = 12421699 is a prime.

It is an unprimeable number.

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, 42689 + ... + 42978.

It is an arithmetic number, because the mean of its divisors is an integer number (1927530).

Almost surely, 2^12421715 is an apocalyptic number.

12421715 is a deficient number, since it is larger than the sum of its proper divisors (2998525).

12421715 is an equidigital number, since it uses as much as digits as its factorization.

12421715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85701.

The product of its digits is 560, while the sum is 23.

The square root of 12421715 is about 3524.4453464340. The cubic root of 12421715 is about 231.5939376850.

The spelling of 12421715 in words is "twelve million, four hundred twenty-one thousand, seven hundred fifteen".