842247539 has 16 divisors (see below), whose sum is σ = 1007252928. Its totient is φ = 689150592.

The previous prime is 842247533. The next prime is 842247547. The reversal of 842247539 is 935742248.

It is a cyclic number.

It is not a de Polignac number, because 842247539 - 2²⁴ = 825470323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 842247539.

It is not an unprimeable number, because it can be changed into a prime (842247533) 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 15 ways as a sum of consecutive naturals, for example, 16952 + ... + 44405.

It is an arithmetic number, because the mean of its divisors is an integer number (62953308).

Almost surely, 2^842247539 is an apocalyptic number.

842247539 is a deficient number, since it is larger than the sum of its proper divisors (165005389).

842247539 is a wasteful number, since it uses less digits than its factorization.

842247539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61454.

The product of its digits is 483840, while the sum is 44.

The square root of 842247539 is about 29021.5013222955. The cubic root of 842247539 is about 944.3795705438.

The spelling of 842247539 in words is "eight hundred forty-two million, two hundred forty-seven thousand, five hundred thirty-nine".