20423041420303 has 2 divisors, whose sum is σ = 20423041420304. Its totient is φ = 20423041420302.

The previous prime is 20423041420277. The next prime is 20423041420337. The reversal of 20423041420303 is 30302414032402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20423041420303 is a prime.

It is a super-2 number, since 2×20423041420303² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20423041420403) 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, 10211520710151 + 10211520710152.

It is an arithmetic number, because the mean of its divisors is an integer number (10211520710152).

Almost surely, 2^{20423041420303} is an apocalyptic number.

20423041420303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20423041420303 is an equidigital number, since it uses as much as digits as its factorization.

20423041420303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 20423041420303 its reverse (30302414032402), we get a palindrome (50725455452705).

The spelling of 20423041420303 in words is "twenty trillion, four hundred twenty-three billion, forty-one million, four hundred twenty thousand, three hundred three".