424334241421 has 2 divisors, whose sum is σ = 424334241422. Its totient is φ = 424334241420.

The previous prime is 424334241377. The next prime is 424334241449. The reversal of 424334241421 is 124142433424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 365728610025 + 58605631396 = 604755^2 + 242086^2 .

It is a cyclic number.

It is not a de Polignac number, because 424334241421 - 2¹³ = 424334233229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424334241521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212167120710 + 212167120711.

It is an arithmetic number, because the mean of its divisors is an integer number (212167120711).

Almost surely, 2^424334241421 is an apocalyptic number.

It is an amenable number.

424334241421 is a deficient number, since it is larger than the sum of its proper divisors (1).

424334241421 is an equidigital number, since it uses as much as digits as its factorization.

424334241421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73728, while the sum is 34.

Adding to 424334241421 its reverse (124142433424), we get a palindrome (548476674845).

The spelling of 424334241421 in words is "four hundred twenty-four billion, three hundred thirty-four million, two hundred forty-one thousand, four hundred twenty-one".