20424243034103 has 2 divisors, whose sum is σ = 20424243034104. Its totient is φ = 20424243034102.

The previous prime is 20424243034057. The next prime is 20424243034109. The reversal of 20424243034103 is 30143034242402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20424243034103 is a prime.

It is a super-2 number, since 2×20424243034103² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20424243034103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20424243034109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212121517051 + 10212121517052.

It is an arithmetic number, because the mean of its divisors is an integer number (10212121517052).

Almost surely, 2^{20424243034103} is an apocalyptic number.

20424243034103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20424243034103 is an equidigital number, since it uses as much as digits as its factorization.

20424243034103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 20424243034103 its reverse (30143034242402), we get a palindrome (50567277276505).

The spelling of 20424243034103 in words is "twenty trillion, four hundred twenty-four billion, two hundred forty-three million, thirty-four thousand, one hundred three".