13466421 has 24 divisors (see below), whose sum is σ = 20827040. Its totient is φ = 8359200.

The previous prime is 13466417. The next prime is 13466429. The reversal of 13466421 is 12466431.

13466421 is a `hidden beast` number, since 13 + 4 + 6 + 642 + 1 = 666.

It is not a de Polignac number, because 13466421 - 2² = 13466417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13466429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9786 + ... + 11076.

Almost surely, 2^13466421 is an apocalyptic number.

It is an amenable number.

13466421 is a deficient number, since it is larger than the sum of its proper divisors (7360619).

13466421 is a wasteful number, since it uses less digits than its factorization.

13466421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1374 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 13466421 is about 3669.6622460385. The cubic root of 13466421 is about 237.9125741082.

The spelling of 13466421 in words is "thirteen million, four hundred sixty-six thousand, four hundred twenty-one".