802003520042 has 4 divisors (see below), whose sum is σ = 1203005280066. Its totient is φ = 401001760020.

The previous prime is 802003520009. The next prime is 802003520063. The reversal of 802003520042 is 240025300208.

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., 424060137601 + 377943382441 = 651199^2 + 614771^2 .

It is a junction number, because it is equal to n+sod(n) for n = 802003519993 and 802003520020.

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, 200500880009 + ... + 200500880012.

Almost surely, 2^802003520042 is an apocalyptic number.

802003520042 is a deficient number, since it is larger than the sum of its proper divisors (401001760024).

802003520042 is a wasteful number, since it uses less digits than its factorization.

802003520042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401001760023.

The product of its (nonzero) digits is 3840, while the sum is 26.

The spelling of 802003520042 in words is "eight hundred two billion, three million, five hundred twenty thousand, forty-two".