12421685 has 8 divisors (see below), whose sum is σ = 14985216. Its totient is φ = 9884560.

The previous prime is 12421681. The next prime is 12421691. The reversal of 12421685 is 58612421.

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

It is not a de Polignac number, because 12421685 - 2² = 12421681 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 (12421681) 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, 5549 + ... + 7458.

It is an arithmetic number, because the mean of its divisors is an integer number (1873152).

Almost surely, 2^12421685 is an apocalyptic number.

It is an amenable number.

12421685 is a deficient number, since it is larger than the sum of its proper divisors (2563531).

12421685 is a wasteful number, since it uses less digits than its factorization.

12421685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13203.

The product of its digits is 3840, while the sum is 29.

The square root of 12421685 is about 3524.4410904426. The cubic root of 12421685 is about 231.5937512421.

The spelling of 12421685 in words is "twelve million, four hundred twenty-one thousand, six hundred eighty-five".