14202421 has 4 divisors (see below), whose sum is σ = 14443200. Its totient is φ = 13961644.

The previous prime is 14202403. The next prime is 14202451. The reversal of 14202421 is 12420241.

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 an emirpimes, since its reverse is a distinct semiprime: 12420241 = 131 ⋅94811.

It is a cyclic number.

It is not a de Polignac number, because 14202421 - 2⁵ = 14202389 is a prime.

It is a super-2 number, since 2×14202421² = 403417524522482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 14202395 and 14202404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14202401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120301 + ... + 120418.

It is an arithmetic number, because the mean of its divisors is an integer number (3610800).

Almost surely, 2^14202421 is an apocalyptic number.

It is an amenable number.

14202421 is a deficient number, since it is larger than the sum of its proper divisors (240779).

14202421 is an equidigital number, since it uses as much as digits as its factorization.

14202421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240778.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 14202421 is about 3768.6099559387. The cubic root of 14202421 is about 242.1702522105.

Adding to 14202421 its reverse (12420241), we get a palindrome (26622662).

The spelling of 14202421 in words is "fourteen million, two hundred two thousand, four hundred twenty-one".