14006421 has 24 divisors (see below), whose sum is σ = 23770656. Its totient is φ = 7835040.

The previous prime is 14006413. The next prime is 14006429. The reversal of 14006421 is 12460041.

14006421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (14006413) and next prime (14006429).

It is not a de Polignac number, because 14006421 - 2³ = 14006413 is a prime.

It is a super-3 number, since 3×14006421³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 14006394 and 14006403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14006429) 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 23 ways as a sum of consecutive naturals, for example, 4155 + ... + 6728.

It is an arithmetic number, because the mean of its divisors is an integer number (990444).

Almost surely, 2^14006421 is an apocalyptic number.

14006421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14006421 is a deficient number, since it is larger than the sum of its proper divisors (9764235).

14006421 is a wasteful number, since it uses less digits than its factorization.

14006421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10913 (or 10910 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 14006421 is about 3742.5153306299. The cubic root of 14006421 is about 241.0510672703.

Adding to 14006421 its reverse (12460041), we get a palindrome (26466462).

The spelling of 14006421 in words is "fourteen million, six thousand, four hundred twenty-one".