20042422400971 has 4 divisors (see below), whose sum is σ = 20046180595392. Its totient is φ = 20038664206552.

The previous prime is 20042422400969. The next prime is 20042422401049. The reversal of 20042422400971 is 17900422424002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20042422400971 - 2¹ = 20042422400969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20042422400971.

It is not an unprimeable number, because it can be changed into a prime (20042422404971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1879089211 + ... + 1879099876.

It is an arithmetic number, because the mean of its divisors is an integer number (5011545148848).

Almost surely, 2^{20042422400971} is an apocalyptic number.

20042422400971 is a deficient number, since it is larger than the sum of its proper divisors (3758194421).

20042422400971 is an equidigital number, since it uses as much as digits as its factorization.

20042422400971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3758194420.

The product of its (nonzero) digits is 64512, while the sum is 37.

Adding to 20042422400971 its reverse (17900422424002), we get a palindrome (37942844824973).

The spelling of 20042422400971 in words is "twenty trillion, forty-two billion, four hundred twenty-two million, four hundred thousand, nine hundred seventy-one".