12446421 has 16 divisors (see below), whose sum is σ = 17943744. Its totient is φ = 7628544.

The previous prime is 12446419. The next prime is 12446429. The reversal of 12446421 is 12464421.

It is a happy number.

12446421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12446421 - 2¹ = 12446419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12446391 and 12446400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12446429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12670 + ... + 13616.

It is an arithmetic number, because the mean of its divisors is an integer number (1121484).

Almost surely, 2^12446421 is an apocalyptic number.

It is an amenable number.

12446421 is a deficient number, since it is larger than the sum of its proper divisors (5497323).

12446421 is a wasteful number, since it uses less digits than its factorization.

12446421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300.

The product of its digits is 1536, while the sum is 24.

The square root of 12446421 is about 3527.9485540467. The cubic root of 12446421 is about 231.7473778663.

The spelling of 12446421 in words is "twelve million, four hundred forty-six thousand, four hundred twenty-one".