8239307742 has 16 divisors (see below), whose sum is σ = 18309572880. Its totient is φ = 2746435896.

The previous prime is 8239307731. The next prime is 8239307743. The reversal of 8239307742 is 2477039328.

It is a super-2 number, since 2×8239307742² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8239307743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76289833 + ... + 76289940.

It is an arithmetic number, because the mean of its divisors is an integer number (1144348305).

Almost surely, 2^8239307742 is an apocalyptic number.

8239307742 is an abundant number, since it is smaller than the sum of its proper divisors (10070265138).

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

8239307742 is a wasteful number, since it uses less digits than its factorization.

8239307742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152579784 (or 152579778 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 8239307742 is about 90770.6325966719. The cubic root of 8239307742 is about 2019.7467040171.

The spelling of 8239307742 in words is "eight billion, two hundred thirty-nine million, three hundred seven thousand, seven hundred forty-two".