13415421 has 8 divisors (see below), whose sum is σ = 17904640. Its totient is φ = 8934912.

The previous prime is 13415411. The next prime is 13415447. The reversal of 13415421 is 12451431.

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

It is not a de Polignac number, because 13415421 - 2¹⁰ = 13414397 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 (13415411) 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, 3645 + ... + 6333.

It is an arithmetic number, because the mean of its divisors is an integer number (2238080).

Almost surely, 2^13415421 is an apocalyptic number.

It is an amenable number.

13415421 is a deficient number, since it is larger than the sum of its proper divisors (4489219).

13415421 is a wasteful number, since it uses less digits than its factorization.

13415421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355.

The product of its digits is 480, while the sum is 21.

The square root of 13415421 is about 3662.7067859713. The cubic root of 13415421 is about 237.6118534995.

Adding to 13415421 its reverse (12451431), we get a palindrome (25866852).

The spelling of 13415421 in words is "thirteen million, four hundred fifteen thousand, four hundred twenty-one".