201042420023 has 2 divisors, whose sum is σ = 201042420024. Its totient is φ = 201042420022.

The previous prime is 201042420017. The next prime is 201042420037. The reversal of 201042420023 is 320024240102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201042420023 - 2³⁰ = 199968678199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201042419977 and 201042420004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201042428023) 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 as a sum of consecutive naturals, namely, 100521210011 + 100521210012.

It is an arithmetic number, because the mean of its divisors is an integer number (100521210012).

Almost surely, 2^201042420023 is an apocalyptic number.

201042420023 is a deficient number, since it is larger than the sum of its proper divisors (1).

201042420023 is an equidigital number, since it uses as much as digits as its factorization.

201042420023 is an odious number, because the sum of its binary digits is odd.

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

Adding to 201042420023 its reverse (320024240102), we get a palindrome (521066660125).

The spelling of 201042420023 in words is "two hundred one billion, forty-two million, four hundred twenty thousand, twenty-three".