842887 has 2 divisors, whose sum is σ = 842888. Its totient is φ = 842886.

The previous prime is 842879. The next prime is 842923. The reversal of 842887 is 788248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 842887 - 2³ = 842879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421443 + 421444.

It is an arithmetic number, because the mean of its divisors is an integer number (421444).

2⁸⁴²⁸⁸⁷ is an apocalyptic number.

842887 is a deficient number, since it is larger than the sum of its proper divisors (1).

842887 is an equidigital number, since it uses as much as digits as its factorization.

842887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28672, while the sum is 37.

The square root of 842887 is about 918.0887756639. The cubic root of 842887 is about 94.4618511041.

It can be divided in two parts, 8428 and 87, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 842887 in words is "eight hundred forty-two thousand, eight hundred eighty-seven".