20424400103 has 2 divisors, whose sum is σ = 20424400104. Its totient is φ = 20424400102.

The previous prime is 20424400069. The next prime is 20424400121. The reversal of 20424400103 is 30100442402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20424400103 - 2³⁰ = 19350658279 is a prime.

It is a super-2 number, since 2×20424400103² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20424400133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212200051 + 10212200052.

It is an arithmetic number, because the mean of its divisors is an integer number (10212200052).

Almost surely, 2^20424400103 is an apocalyptic number.

20424400103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20424400103 is an equidigital number, since it uses as much as digits as its factorization.

20424400103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20424400103 its reverse (30100442402), we get a palindrome (50524842505).

The spelling of 20424400103 in words is "twenty billion, four hundred twenty-four million, four hundred thousand, one hundred three".