806219039042 has 4 divisors (see below), whose sum is σ = 1209328558566. Its totient is φ = 403109519520.

The previous prime is 806219038997. The next prime is 806219039107. The reversal of 806219039042 is 240930912608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 656876209441 + 149342829601 = 810479^2 + 386449^2 .

It is a junction number, because it is equal to n+sod(n) for n = 806219038984 and 806219039002.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 201554759759 + ... + 201554759762.

Almost surely, 2^806219039042 is an apocalyptic number.

806219039042 is a deficient number, since it is larger than the sum of its proper divisors (403109519524).

806219039042 is a wasteful number, since it uses less digits than its factorization.

806219039042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403109519523.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 806219039042 in words is "eight hundred six billion, two hundred nineteen million, thirty-nine thousand, forty-two".