12454245421 has 2 divisors, whose sum is σ = 12454245422. Its totient is φ = 12454245420.

The previous prime is 12454245383. The next prime is 12454245449.

12454245421 is nontrivially palindromic in base 10.

12454245421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11365905321 + 1088340100 = 106611^2 + 32990^2 .

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12454245421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12454245491) 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 as a sum of consecutive naturals, namely, 6227122710 + 6227122711.

It is an arithmetic number, because the mean of its divisors is an integer number (6227122711).

Almost surely, 2^12454245421 is an apocalyptic number.

It is an amenable number.

12454245421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12454245421 is an equidigital number, since it uses as much as digits as its factorization.

12454245421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51200, while the sum is 34.

The spelling of 12454245421 in words is "twelve billion, four hundred fifty-four million, two hundred forty-five thousand, four hundred twenty-one".