7842536242 has 16 divisors (see below), whose sum is σ = 11789436600. Its totient is φ = 3912735232.

The previous prime is 7842536239. The next prime is 7842536249. The reversal of 7842536242 is 2426352487.

It can be written as a sum of positive squares in 4 ways, for example, as 3928907761 + 3913628481 = 62681^2 + 62559^2 .

It is not an unprimeable number, because it can be changed into a prime (7842536249) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2272134 + ... + 2275582.

Almost surely, 2^7842536242 is an apocalyptic number.

7842536242 is a deficient number, since it is larger than the sum of its proper divisors (3946900358).

7842536242 is a wasteful number, since it uses less digits than its factorization.

7842536242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5597.

The product of its digits is 645120, while the sum is 43.

The square root of 7842536242 is about 88558.0952934287. The cubic root of 7842536242 is about 1986.7909730274.

The spelling of 7842536242 in words is "seven billion, eight hundred forty-two million, five hundred thirty-six thousand, two hundred forty-two".