523842 has 16 divisors (see below), whose sum is σ = 1143072. Its totient is φ = 158720.

The previous prime is 523829. The next prime is 523847. The reversal of 523842 is 248325.

It is not an unprimeable number, because it can be changed into a prime (523847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3903 + ... + 4034.

It is an arithmetic number, because the mean of its divisors is an integer number (71442).

2⁵²³⁸⁴² is an apocalyptic number.

523842 is an abundant number, since it is smaller than the sum of its proper divisors (619230).

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

523842 is a wasteful number, since it uses less digits than its factorization.

523842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7953.

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

The square root of 523842 is about 723.7693002608. The cubic root of 523842 is about 80.6120759285.

The spelling of 523842 in words is "five hundred twenty-three thousand, eight hundred forty-two".