14122421 has 4 divisors (see below), whose sum is σ = 14132844. Its totient is φ = 14112000.

The previous prime is 14122403. The next prime is 14122429. The reversal of 14122421 is 12422141.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 12460900 + 1661521 = 3530^2 + 1289^2 .

It is a cyclic number.

It is not a de Polignac number, because 14122421 - 2¹⁰ = 14121397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14122421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14122429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2810 + ... + 6011.

It is an arithmetic number, because the mean of its divisors is an integer number (3533211).

Almost surely, 2^14122421 is an apocalyptic number.

It is an amenable number.

14122421 is a deficient number, since it is larger than the sum of its proper divisors (10423).

14122421 is an equidigital number, since it uses as much as digits as its factorization.

14122421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10422.

The product of its digits is 128, while the sum is 17.

The square root of 14122421 is about 3757.9809738741. The cubic root of 14122421 is about 241.7146934804.

Adding to 14122421 its reverse (12422141), we get a palindrome (26544562).

The spelling of 14122421 in words is "fourteen million, one hundred twenty-two thousand, four hundred twenty-one".