2840745738242 has 16 divisors (see below), whose sum is σ = 4351887993600. Its totient is φ = 1390117897248.

The previous prime is 2840745738203. The next prime is 2840745738247. The reversal of 2840745738242 is 2428375470482.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2840745738247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3695603 + ... + 4397609.

It is an arithmetic number, because the mean of its divisors is an integer number (271992999600).

Almost surely, 2^{2840745738242} is an apocalyptic number.

2840745738242 is a deficient number, since it is larger than the sum of its proper divisors (1511142255358).

2840745738242 is a wasteful number, since it uses less digits than its factorization.

2840745738242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745105.

The product of its (nonzero) digits is 24084480, while the sum is 56.

The spelling of 2840745738242 in words is "two trillion, eight hundred forty billion, seven hundred forty-five million, seven hundred thirty-eight thousand, two hundred forty-two".