842047 has 2 divisors, whose sum is σ = 842048. Its totient is φ = 842046.

The previous prime is 842041. The next prime is 842063. The reversal of 842047 is 740248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 842047 - 2¹¹ = 839999 is a prime.

It is a d-powerful number, because it can be written as 8 + 4³ + 0 + 2¹¹ + 4⁷ + 7⁷ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421023 + 421024.

It is an arithmetic number, because the mean of its divisors is an integer number (421024).

2⁸⁴²⁰⁴⁷ is an apocalyptic number.

842047 is a deficient number, since it is larger than the sum of its proper divisors (1).

842047 is an equidigital number, since it uses as much as digits as its factorization.

842047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 842047 is about 917.6311895310. The cubic root of 842047 is about 94.4304612388.

The spelling of 842047 in words is "eight hundred forty-two thousand, forty-seven".