11415421 has 8 divisors (see below), whose sum is σ = 11628800. Its totient is φ = 11203920.

The previous prime is 11415413. The next prime is 11415427. The reversal of 11415421 is 12451411.

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

It is a cyclic number.

It is not a de Polignac number, because 11415421 - 2³ = 11415413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11415427) 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, 17776 + ... + 18406.

It is an arithmetic number, because the mean of its divisors is an integer number (1453600).

Almost surely, 2^11415421 is an apocalyptic number.

It is an amenable number.

11415421 is a deficient number, since it is larger than the sum of its proper divisors (213379).

11415421 is an equidigital number, since it uses as much as digits as its factorization.

11415421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its digits is 160, while the sum is 19.

The square root of 11415421 is about 3378.6714844743. The cubic root of 11415421 is about 225.1631475168.

Adding to 11415421 its reverse (12451411), we get a palindrome (23866832).

The spelling of 11415421 in words is "eleven million, four hundred fifteen thousand, four hundred twenty-one".