2040042345205 has 4 divisors (see below), whose sum is σ = 2448050814252. Its totient is φ = 1632033876160.

The previous prime is 2040042345203. The next prime is 2040042345221. The reversal of 2040042345205 is 5025432400402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 619698009681 + 1420344335524 = 787209^2 + 1191782^2 .

It is not a de Polignac number, because 2040042345205 - 2¹ = 2040042345203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040042345203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204004234516 + ... + 204004234525.

It is an arithmetic number, because the mean of its divisors is an integer number (612012703563).

Almost surely, 2^{2040042345205} is an apocalyptic number.

It is an amenable number.

2040042345205 is a deficient number, since it is larger than the sum of its proper divisors (408008469047).

2040042345205 is an equidigital number, since it uses as much as digits as its factorization.

2040042345205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408008469046.

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 2040042345205 its reverse (5025432400402), we get a palindrome (7065474745607).

The spelling of 2040042345205 in words is "two trillion, forty billion, forty-two million, three hundred forty-five thousand, two hundred five".