8540004243 has 8 divisors (see below), whose sum is σ = 11411590288. Its totient is φ = 5680877184.

The previous prime is 8540004191. The next prime is 8540004287. The reversal of 8540004243 is 3424000458.

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

It is not a de Polignac number, because 8540004243 - 2¹³ = 8539996051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8540004243.

It is not an unprimeable number, because it can be changed into a prime (8540804243) 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, 3113146 + ... + 3115887.

It is an arithmetic number, because the mean of its divisors is an integer number (1426448786).

Almost surely, 2^8540004243 is an apocalyptic number.

8540004243 is a deficient number, since it is larger than the sum of its proper divisors (2871586045).

8540004243 is a wasteful number, since it uses less digits than its factorization.

8540004243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6229493.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 8540004243 is about 92412.1433741259. The cubic root of 8540004243 is about 2044.0241790376.

The spelling of 8540004243 in words is "eight billion, five hundred forty million, four thousand, two hundred forty-three".