14197421 has 4 divisors (see below), whose sum is σ = 16225632. Its totient is φ = 12169212.

The previous prime is 14197409. The next prime is 14197441. The reversal of 14197421 is 12479141.

14197421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 12479141 = 677 ⋅18433.

It is a cyclic number.

It is not a de Polignac number, because 14197421 - 2¹⁸ = 13935277 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 (14197441) 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, 1014095 + ... + 1014108.

It is an arithmetic number, because the mean of its divisors is an integer number (4056408).

Almost surely, 2^14197421 is an apocalyptic number.

It is an amenable number.

14197421 is a deficient number, since it is larger than the sum of its proper divisors (2028211).

14197421 is an equidigital number, since it uses as much as digits as its factorization.

14197421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028210.

The product of its digits is 2016, while the sum is 29.

The square root of 14197421 is about 3767.9465229751. The cubic root of 14197421 is about 242.1418299815.

The spelling of 14197421 in words is "fourteen million, one hundred ninety-seven thousand, four hundred twenty-one".