14420421 has 6 divisors (see below), whose sum is σ = 20829510. Its totient is φ = 9613608.

The previous prime is 14420383. The next prime is 14420429. The reversal of 14420421 is 12402441.

It can be written as a sum of positive squares in only one way, i.e., 9180900 + 5239521 = 3030^2 + 2289^2 .

It is not a de Polignac number, because 14420421 - 2¹⁰ = 14419397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14420394 and 14420403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14420429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 801126 + ... + 801143.

It is an arithmetic number, because the mean of its divisors is an integer number (3471585).

Almost surely, 2^14420421 is an apocalyptic number.

It is an amenable number.

14420421 is a deficient number, since it is larger than the sum of its proper divisors (6409089).

14420421 is a wasteful number, since it uses less digits than its factorization.

14420421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602275 (or 1602272 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 14420421 is about 3797.4229419437. The cubic root of 14420421 is about 243.4030298050.

Adding to 14420421 its reverse (12402441), we get a palindrome (26822862).

It can be divided in two parts, 14420 and 421, that added together give a palindrome (14841).

The spelling of 14420421 in words is "fourteen million, four hundred twenty thousand, four hundred twenty-one".