2806642042 has 16 divisors (see below), whose sum is σ = 4239810432. Its totient is φ = 1393405920.

The previous prime is 2806642039. The next prime is 2806642049. The reversal of 2806642042 is 2402466082.

It is a junction number, because it is equal to n+sod(n) for n = 2806641989 and 2806642007.

It is not an unprimeable number, because it can be changed into a prime (2806642049) 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, 162817 + ... + 179227.

It is an arithmetic number, because the mean of its divisors is an integer number (264988152).

Almost surely, 2^2806642042 is an apocalyptic number.

2806642042 is a deficient number, since it is larger than the sum of its proper divisors (1433168390).

2806642042 is a wasteful number, since it uses less digits than its factorization.

2806642042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17013.

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 2806642042 is about 52977.7504429926. The cubic root of 2806642042 is about 1410.5733533301.

The spelling of 2806642042 in words is "two billion, eight hundred six million, six hundred forty-two thousand, forty-two".