20042422450423 has 2 divisors, whose sum is σ = 20042422450424. Its totient is φ = 20042422450422.

The previous prime is 20042422450417. The next prime is 20042422450433. The reversal of 20042422450423 is 32405422424002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20042422450423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20042422450403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021211225211 + 10021211225212.

It is an arithmetic number, because the mean of its divisors is an integer number (10021211225212).

Almost surely, 2^{20042422450423} is an apocalyptic number.

20042422450423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042422450423 is an equidigital number, since it uses as much as digits as its factorization.

20042422450423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122880, while the sum is 34.

Adding to 20042422450423 its reverse (32405422424002), we get a palindrome (52447844874425).

The spelling of 20042422450423 in words is "twenty trillion, forty-two billion, four hundred twenty-two million, four hundred fifty thousand, four hundred twenty-three".