4000640260242 has 64 divisors (see below), whose sum is σ = 8159328184320. Its totient is φ = 1307332852800.

The previous prime is 4000640260207. The next prime is 4000640260247. The reversal of 4000640260242 is 2420620460004.

It is not an unprimeable number, because it can be changed into a prime (4000640260247) 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 in 31 ways as a sum of consecutive naturals, for example, 485333773 + ... + 485342015.

It is an arithmetic number, because the mean of its divisors is an integer number (127489502880).

Almost surely, 2^{4000640260242} is an apocalyptic number.

4000640260242 is an abundant number, since it is smaller than the sum of its proper divisors (4158687924078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4000640260242 is a wasteful number, since it uses less digits than its factorization.

4000640260242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11919.

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 4000640260242 in words is "four trillion, six hundred forty million, two hundred sixty thousand, two hundred forty-two".