14421421 has 4 divisors (see below), whose sum is σ = 16481632. Its totient is φ = 12361212.

The previous prime is 14421419. The next prime is 14421443. The reversal of 14421421 is 12412441.

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: 12412441 = 53 ⋅234197.

It is a cyclic number.

It is not a de Polignac number, because 14421421 - 2¹ = 14421419 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 (14421401) 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, 1030095 + ... + 1030108.

It is an arithmetic number, because the mean of its divisors is an integer number (4120408).

Almost surely, 2^14421421 is an apocalyptic number.

It is an amenable number.

14421421 is a deficient number, since it is larger than the sum of its proper divisors (2060211).

14421421 is an equidigital number, since it uses as much as digits as its factorization.

14421421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060210.

The product of its digits is 256, while the sum is 19.

The square root of 14421421 is about 3797.5546079023. The cubic root of 14421421 is about 243.4086560254.

Adding to 14421421 its reverse (12412441), we get a palindrome (26833862).

The spelling of 14421421 in words is "fourteen million, four hundred twenty-one thousand, four hundred twenty-one".