14121421 has 2 divisors, whose sum is σ = 14121422. Its totient is φ = 14121420.

The previous prime is 14121413. The next prime is 14121433. The reversal of 14121421 is 12412141.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13286025 + 835396 = 3645^2 + 914^2 .

It is a cyclic number.

It is not a de Polignac number, because 14121421 - 2³ = 14121413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14121395 and 14121404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14121491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7060710 + 7060711.

It is an arithmetic number, because the mean of its divisors is an integer number (7060711).

Almost surely, 2^14121421 is an apocalyptic number.

It is an amenable number.

14121421 is a deficient number, since it is larger than the sum of its proper divisors (1).

14121421 is an equidigital number, since it uses as much as digits as its factorization.

14121421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64, while the sum is 16.

The square root of 14121421 is about 3757.8479213507. The cubic root of 14121421 is about 241.7089881225.

Adding to 14121421 its reverse (12412141), we get a palindrome (26533562).

The spelling of 14121421 in words is "fourteen million, one hundred twenty-one thousand, four hundred twenty-one".