8126842155 has 16 divisors (see below), whose sum is σ = 13004202240. Its totient is φ = 4333897568.

The previous prime is 8126842151. The next prime is 8126842159. The reversal of 8126842155 is 5512486218.

It is an interprime number because it is at equal distance from previous prime (8126842151) and next prime (8126842159).

It is a cyclic number.

It is not a de Polignac number, because 8126842155 - 2² = 8126842151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8126842151) 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 15 ways as a sum of consecutive naturals, for example, 194626 + ... + 232664.

It is an arithmetic number, because the mean of its divisors is an integer number (812762640).

Almost surely, 2^8126842155 is an apocalyptic number.

8126842155 is a deficient number, since it is larger than the sum of its proper divisors (4877360085).

8126842155 is a wasteful number, since it uses less digits than its factorization.

8126842155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52290.

The product of its digits is 153600, while the sum is 42.

The square root of 8126842155 is about 90148.9997448668. Note that the first 3 decimals coincide. The cubic root of 8126842155 is about 2010.5148021736.

The spelling of 8126842155 in words is "eight billion, one hundred twenty-six million, eight hundred forty-two thousand, one hundred fifty-five".