5424402421 has 2 divisors, whose sum is σ = 5424402422. Its totient is φ = 5424402420.

The previous prime is 5424402419. The next prime is 5424402433. The reversal of 5424402421 is 1242044245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4487124196 + 937278225 = 66986^2 + 30615^2 .

It is a cyclic number.

It is not a de Polignac number, because 5424402421 - 2¹ = 5424402419 is a prime.

It is a super-2 number, since 2×5424402421² = 58848283249901322482, which contains 22 as substring.

Together with 5424402419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 5424402421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5424402461) 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, 2712201210 + 2712201211.

It is an arithmetic number, because the mean of its divisors is an integer number (2712201211).

Almost surely, 2^5424402421 is an apocalyptic number.

It is an amenable number.

5424402421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5424402421 is an equidigital number, since it uses as much as digits as its factorization.

5424402421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 5424402421 is about 73650.5425709818. The cubic root of 5424402421 is about 1757.0493799685.

Adding to 5424402421 its reverse (1242044245), we get a palindrome (6666446666).

The spelling of 5424402421 in words is "five billion, four hundred twenty-four million, four hundred two thousand, four hundred twenty-one".