8140042992 has 80 divisors (see below), whose sum is σ = 21797811200. Its totient is φ = 2614809600.

The previous prime is 8140042987. The next prime is 8140042997. The reversal of 8140042992 is 2992400418.

It is an interprime number because it is at equal distance from previous prime (8140042987) and next prime (8140042997).

It is a self number, because there is not a number n which added to its sum of digits gives 8140042992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8140042997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347259 + ... + 369957.

It is an arithmetic number, because the mean of its divisors is an integer number (272472640).

Almost surely, 2^8140042992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8140042992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10898905600).

8140042992 is an abundant number, since it is smaller than the sum of its proper divisors (13657768208).

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

8140042992 is a wasteful number, since it uses less digits than its factorization.

8140042992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22982 (or 22976 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 8140042992 is about 90222.1868056854. The cubic root of 8140042992 is about 2011.6028066037.

The spelling of 8140042992 in words is "eight billion, one hundred forty million, forty-two thousand, nine hundred ninety-two".