20424103243 has 2 divisors, whose sum is σ = 20424103244. Its totient is φ = 20424103242.

The previous prime is 20424103213. The next prime is 20424103277. The reversal of 20424103243 is 34230142402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20424103243 is a prime.

It is not a weakly prime, because it can be changed into another prime (20424103213) 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, 10212051621 + 10212051622.

It is an arithmetic number, because the mean of its divisors is an integer number (10212051622).

Almost surely, 2^20424103243 is an apocalyptic number.

20424103243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20424103243 is an equidigital number, since it uses as much as digits as its factorization.

20424103243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20424103243 its reverse (34230142402), we get a palindrome (54654245645).

The spelling of 20424103243 in words is "twenty billion, four hundred twenty-four million, one hundred three thousand, two hundred forty-three".