2005542023 has 2 divisors, whose sum is σ = 2005542024. Its totient is φ = 2005542022.

The previous prime is 2005541939. The next prime is 2005542047. The reversal of 2005542023 is 3202455002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2005542023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2005542023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005542223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002771011 + 1002771012.

It is an arithmetic number, because the mean of its divisors is an integer number (1002771012).

Almost surely, 2^2005542023 is an apocalyptic number.

2005542023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005542023 is an equidigital number, since it uses as much as digits as its factorization.

2005542023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 2005542023 is about 44783.2783860226. The cubic root of 2005542023 is about 1261.0837285294.

Adding to 2005542023 its reverse (3202455002), we get a palindrome (5207997025).

The spelling of 2005542023 in words is "two billion, five million, five hundred forty-two thousand, twenty-three".