7708942642 has 8 divisors (see below), whose sum is σ = 11721817116. Its totient is φ = 3801670272.

The previous prime is 7708942607. The next prime is 7708942643. The reversal of 7708942642 is 2462498077.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7342947481 + 365995161 = 85691^2 + 19131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (7708942643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26400343 + ... + 26400634.

Almost surely, 2^7708942642 is an apocalyptic number.

7708942642 is a deficient number, since it is larger than the sum of its proper divisors (4012874474).

7708942642 is a wasteful number, since it uses less digits than its factorization.

7708942642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52801052.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The square root of 7708942642 is about 87800.5845196944. The cubic root of 7708942642 is about 1975.4449794347. Note that the first 3 decimals are identical.

The spelling of 7708942642 in words is "seven billion, seven hundred eight million, nine hundred forty-two thousand, six hundred forty-two".