4240204243423 has 2 divisors, whose sum is σ = 4240204243424. Its totient is φ = 4240204243422.

The previous prime is 4240204243409. The next prime is 4240204243487. The reversal of 4240204243423 is 3243424020424.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4240204243423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4240204243403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2120102121711 + 2120102121712.

It is an arithmetic number, because the mean of its divisors is an integer number (2120102121712).

Almost surely, 2^{4240204243423} is an apocalyptic number.

4240204243423 is a deficient number, since it is larger than the sum of its proper divisors (1).

4240204243423 is an equidigital number, since it uses as much as digits as its factorization.

4240204243423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147456, while the sum is 34.

Adding to 4240204243423 its reverse (3243424020424), we get a palindrome (7483628263847).

The spelling of 4240204243423 in words is "four trillion, two hundred forty billion, two hundred four million, two hundred forty-three thousand, four hundred twenty-three".