14040421 has 2 divisors, whose sum is σ = 14040422. Its totient is φ = 14040420.

The previous prime is 14040413. The next prime is 14040443. The reversal of 14040421 is 12404041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13068225 + 972196 = 3615^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 14040421 - 2³ = 14040413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14040395 and 14040404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14040821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7020210 + 7020211.

It is an arithmetic number, because the mean of its divisors is an integer number (7020211).

Almost surely, 2^14040421 is an apocalyptic number.

It is an amenable number.

14040421 is a deficient number, since it is larger than the sum of its proper divisors (1).

14040421 is an equidigital number, since it uses as much as digits as its factorization.

14040421 is an evil number, because the sum of its binary digits is even.

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

The square root of 14040421 is about 3747.0549769119. The cubic root of 14040421 is about 241.2459567812.

Adding to 14040421 its reverse (12404041), we get a palindrome (26444462).

The spelling of 14040421 in words is "fourteen million, forty thousand, four hundred twenty-one".