842847520 has 24 divisors (see below), whose sum is σ = 1991227644. Its totient is φ = 337138944.

The previous prime is 842847493. The next prime is 842847521. The reversal of 842847520 is 25748248.

It can be written as a sum of positive squares in 2 ways, for example, as 814075024 + 28772496 = 28532^2 + 5364^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (842847521) 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 in 3 ways as a sum of consecutive naturals, for example, 2633739 + ... + 2634058.

Almost surely, 2^842847520 is an apocalyptic number.

842847520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

842847520 is an abundant number, since it is smaller than the sum of its proper divisors (1148380124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

842847520 is a wasteful number, since it uses less digits than its factorization.

842847520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5267812 (or 5267804 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 40.

The square root of 842847520 is about 29031.8363180836. The cubic root of 842847520 is about 944.6037624760.

The spelling of 842847520 in words is "eight hundred forty-two million, eight hundred forty-seven thousand, five hundred twenty".