842868587 has 4 divisors (see below), whose sum is σ = 919493016. Its totient is φ = 766244160.

The previous prime is 842868583. The next prime is 842868683. The reversal of 842868587 is 785868248.

It is a happy number.

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

It is not a de Polignac number, because 842868587 - 2² = 842868583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842868581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38312198 + ... + 38312219.

It is an arithmetic number, because the mean of its divisors is an integer number (229873254).

Almost surely, 2^842868587 is an apocalyptic number.

842868587 is a deficient number, since it is larger than the sum of its proper divisors (76624429).

842868587 is a wasteful number, since it uses less digits than its factorization.

842868587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76624428.

The product of its digits is 6881280, while the sum is 56.

The square root of 842868587 is about 29032.1991416427. The cubic root of 842868587 is about 944.6116325439.

The spelling of 842868587 in words is "eight hundred forty-two million, eight hundred sixty-eight thousand, five hundred eighty-seven".