8020542123 has 48 divisors (see below), whose sum is σ = 12848110080. Its totient is φ = 4780944000.

The previous prime is 8020542119. The next prime is 8020542157. The reversal of 8020542123 is 3212450208.

8020542123 is a `hidden beast` number, since 80 + 20 + 542 + 1 + 23 = 666.

It is not a de Polignac number, because 8020542123 - 2² = 8020542119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8020542323) 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 47 ways as a sum of consecutive naturals, for example, 1537143 + ... + 1542351.

It is an arithmetic number, because the mean of its divisors is an integer number (267668960).

Almost surely, 2^8020542123 is an apocalyptic number.

8020542123 is a deficient number, since it is larger than the sum of its proper divisors (4827567957).

8020542123 is a wasteful number, since it uses less digits than its factorization.

8020542123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5480 (or 5477 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 8020542123 is about 89557.4794363933. The cubic root of 8020542123 is about 2001.7103804657.

The spelling of 8020542123 in words is "eight billion, twenty million, five hundred forty-two thousand, one hundred twenty-three".