8642809742 has 16 divisors (see below), whose sum is σ = 15019209312. Its totient is φ = 3653320320.

The previous prime is 8642809733. The next prime is 8642809753. The reversal of 8642809742 is 2479082468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4227359 + ... + 4229402.

It is an arithmetic number, because the mean of its divisors is an integer number (938700582).

Almost surely, 2^8642809742 is an apocalyptic number.

8642809742 is a deficient number, since it is larger than the sum of its proper divisors (6376399570).

8642809742 is a wasteful number, since it uses less digits than its factorization.

8642809742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8456843.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The square root of 8642809742 is about 92966.7130859212. The cubic root of 8642809742 is about 2052.1935466838.

The spelling of 8642809742 in words is "eight billion, six hundred forty-two million, eight hundred nine thousand, seven hundred forty-two".