20201423104242 has 24 divisors (see below), whose sum is σ = 45279051786540. Its totient is φ = 6501607435680.

The previous prime is 20201423104231. The next prime is 20201423104243. The reversal of 20201423104242 is 24240132410202.

It is a happy number.

20201423104242 is a `hidden beast` number, since 2 + 0 + 2 + 0 + 1 + 4 + 231 + 0 + 424 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20174928705801 + 26494398441 = 4491651^2 + 162771^2 .

It is not an unprimeable number, because it can be changed into a prime (20201423104243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19350021609 + ... + 19350022652.

Almost surely, 2^{20201423104242} is an apocalyptic number.

20201423104242 is an abundant number, since it is smaller than the sum of its proper divisors (25077628682298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20201423104242 is a wasteful number, since it uses less digits than its factorization.

20201423104242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38700044298 (or 38700044295 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 20201423104242 its reverse (24240132410202), we get a palindrome (44441555514444).

The spelling of 20201423104242 in words is "twenty trillion, two hundred one billion, four hundred twenty-three million, one hundred four thousand, two hundred forty-two".