2040320545442 has 4 divisors (see below), whose sum is σ = 3060480818166. Its totient is φ = 1020160272720.

The previous prime is 2040320545411. The next prime is 2040320545469. The reversal of 2040320545442 is 2445450230402.

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

It can be written as a sum of positive squares in only one way, i.e., 1623481157281 + 416839388161 = 1274159^2 + 645631^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510080136359 + ... + 510080136362.

Almost surely, 2^{2040320545442} is an apocalyptic number.

2040320545442 is a deficient number, since it is larger than the sum of its proper divisors (1020160272724).

2040320545442 is a wasteful number, since it uses less digits than its factorization.

2040320545442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020160272723.

The product of its (nonzero) digits is 153600, while the sum is 35.

Adding to 2040320545442 its reverse (2445450230402), we get a palindrome (4485770775844).

The spelling of 2040320545442 in words is "two trillion, forty billion, three hundred twenty million, five hundred forty-five thousand, four hundred forty-two".