842523 has 16 divisors (see below), whose sum is σ = 1241472. Its totient is φ = 508200.

The previous prime is 842521. The next prime is 842531. The reversal of 842523 is 325248.

It is not a de Polignac number, because 842523 - 2¹ = 842521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 842493 and 842502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3888 + ... + 4098.

It is an arithmetic number, because the mean of its divisors is an integer number (77592).

2⁸⁴²⁵²³ is an apocalyptic number.

842523 is a deficient number, since it is larger than the sum of its proper divisors (398949).

842523 is a wasteful number, since it uses less digits than its factorization.

842523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 225 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 842523 is about 917.8905163471. The cubic root of 842523 is about 94.4482513908.

It can be divided in two parts, 84252 and 3, that added together give a triangular number (84255 = T₄₁₀).

The spelling of 842523 in words is "eight hundred forty-two thousand, five hundred twenty-three".