12421635 has 8 divisors (see below), whose sum is σ = 19874640. Its totient is φ = 6624864.

The previous prime is 12421631. The next prime is 12421637. The reversal of 12421635 is 53612421.

12421635 is digitally balanced in base 3, 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.

It is not a de Polignac number, because 12421635 - 2² = 12421631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12421631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414040 + ... + 414069.

It is an arithmetic number, because the mean of its divisors is an integer number (2484330).

Almost surely, 2^12421635 is an apocalyptic number.

12421635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12421635 is a deficient number, since it is larger than the sum of its proper divisors (7453005).

12421635 is an equidigital number, since it uses as much as digits as its factorization.

12421635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828117.

The product of its digits is 1440, while the sum is 24.

The square root of 12421635 is about 3524.4339971122. The cubic root of 12421635 is about 231.5934405032.

It can be divided in two parts, 124216 and 35, that added together give a triangular number (124251 = T₄₉₈).

The spelling of 12421635 in words is "twelve million, four hundred twenty-one thousand, six hundred thirty-five".