14205420421 has 4 divisors (see below), whose sum is σ = 14236235244. Its totient is φ = 14174605600.

The previous prime is 14205420413. The next prime is 14205420491. The reversal of 14205420421 is 12402450241.

14205420421 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.

It can be written as a sum of positive squares in 2 ways, for example, as 8572167396 + 5633253025 = 92586^2 + 75055^2 .

It is a cyclic number.

It is not a de Polignac number, because 14205420421 - 2³ = 14205420413 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 (14205420491) 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, 15406720 + ... + 15407641.

It is an arithmetic number, because the mean of its divisors is an integer number (3559058811).

Almost surely, 2^14205420421 is an apocalyptic number.

It is an amenable number.

14205420421 is a deficient number, since it is larger than the sum of its proper divisors (30814823).

14205420421 is an equidigital number, since it uses as much as digits as its factorization.

14205420421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30814822.

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 14205420421 its reverse (12402450241), we get a palindrome (26607870662).

The spelling of 14205420421 in words is "fourteen billion, two hundred five million, four hundred twenty thousand, four hundred twenty-one".