8642023042 has 12 divisors (see below), whose sum is σ = 13681209366. Its totient is φ = 4093589520.

The previous prime is 8642023001. The next prime is 8642023043. The reversal of 8642023042 is 2403202468.

It can be written as a sum of positive squares in only one way, i.e., 6616032921 + 2025990121 = 81339^2 + 45011^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8642022995 and 8642023013.

It is not an unprimeable number, because it can be changed into a prime (8642023043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5984059 + ... + 5985502.

Almost surely, 2^8642023042 is an apocalyptic number.

8642023042 is a deficient number, since it is larger than the sum of its proper divisors (5039186324).

8642023042 is a wasteful number, since it uses less digits than its factorization.

8642023042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11969601 (or 11969582 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 8642023042 is about 92962.4819053364. The cubic root of 8642023042 is about 2052.1312787525.

The spelling of 8642023042 in words is "eight billion, six hundred forty-two million, twenty-three thousand, forty-two".