14272421 has 4 divisors (see below), whose sum is σ = 14280000. Its totient is φ = 14264844.

The previous prime is 14272403. The next prime is 14272429. The reversal of 14272421 is 12427241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12427241 = 373 ⋅33317.

It is a cyclic number.

It is not a de Polignac number, because 14272421 - 2¹⁴ = 14256037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14272429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460 + ... + 5538.

It is an arithmetic number, because the mean of its divisors is an integer number (3570000).

Almost surely, 2^14272421 is an apocalyptic number.

It is an amenable number.

14272421 is a deficient number, since it is larger than the sum of its proper divisors (7579).

14272421 is an equidigital number, since it uses as much as digits as its factorization.

14272421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7578.

The product of its digits is 896, while the sum is 23.

The square root of 14272421 is about 3777.8857844038. The cubic root of 14272421 is about 242.5674648441.

Adding to 14272421 its reverse (12427241), we get a palindrome (26699662).

The spelling of 14272421 in words is "fourteen million, two hundred seventy-two thousand, four hundred twenty-one".