808428840242 has 8 divisors (see below), whose sum is σ = 1214373138732. Its totient is φ = 403637794000.

The previous prime is 808428840221. The next prime is 808428840301. The reversal of 808428840242 is 242048824808.

It can be written as a sum of positive squares in 2 ways, for example, as 792436455721 + 15992384521 = 890189^2 + 126461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 288311309 + ... + 288314112.

Almost surely, 2^808428840242 is an apocalyptic number.

808428840242 is a deficient number, since it is larger than the sum of its proper divisors (405944298490).

808428840242 is a wasteful number, since it uses less digits than its factorization.

808428840242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576626124.

The product of its (nonzero) digits is 2097152, while the sum is 50.

The spelling of 808428840242 in words is "eight hundred eight billion, four hundred twenty-eight million, eight hundred forty thousand, two hundred forty-two".