520842843 has 24 divisors (see below), whose sum is σ = 786140160. Its totient is φ = 331665840.

The previous prime is 520842799. The next prime is 520842851. The reversal of 520842843 is 348248025.

It is not a de Polignac number, because 520842843 - 2⁶ = 520842779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520842798 and 520842807.

It is not an unprimeable number, because it can be changed into a prime (520842043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203868 + ... + 206406.

It is an arithmetic number, because the mean of its divisors is an integer number (32755840).

Almost surely, 2^520842843 is an apocalyptic number.

520842843 is a deficient number, since it is larger than the sum of its proper divisors (265297317).

520842843 is a wasteful number, since it uses less digits than its factorization.

520842843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559 (or 3556 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 520842843 is about 22821.9815747888. The cubic root of 520842843 is about 804.5793839321.

The spelling of 520842843 in words is "five hundred twenty million, eight hundred forty-two thousand, eight hundred forty-three".