842017853 has 2 divisors, whose sum is σ = 842017854. Its totient is φ = 842017852.

The previous prime is 842017829. The next prime is 842017901. The reversal of 842017853 is 358710248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 805027129 + 36990724 = 28373^2 + 6082^2 .

It is a cyclic number.

It is not a de Polignac number, because 842017853 - 2¹⁰ = 842016829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842017823) 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, 421008926 + 421008927.

It is an arithmetic number, because the mean of its divisors is an integer number (421008927).

Almost surely, 2^842017853 is an apocalyptic number.

It is an amenable number.

842017853 is a deficient number, since it is larger than the sum of its proper divisors (1).

842017853 is an equidigital number, since it uses as much as digits as its factorization.

842017853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 842017853 is about 29017.5438829685. The cubic root of 842017853 is about 944.2937167314.

The spelling of 842017853 in words is "eight hundred forty-two million, seventeen thousand, eight hundred fifty-three".