12421653 has 8 divisors (see below), whose sum is σ = 16683648. Its totient is φ = 8220384.

The previous prime is 12421639. The next prime is 12421681. The reversal of 12421653 is 35612421.

12421653 is digitally balanced in base 2, 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 12421653 - 2⁴ = 12421637 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14701 + ... + 15522.

It is an arithmetic number, because the mean of its divisors is an integer number (2085456).

Almost surely, 2^12421653 is an apocalyptic number.

It is an amenable number.

12421653 is a deficient number, since it is larger than the sum of its proper divisors (4261995).

12421653 is a wasteful number, since it uses less digits than its factorization.

12421653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30363.

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

The square root of 12421653 is about 3524.4365507128. The cubic root of 12421653 is about 231.5935523693.

The spelling of 12421653 in words is "twelve million, four hundred twenty-one thousand, six hundred fifty-three".