525042 has 40 divisors (see below), whose sum is σ = 1347456. Its totient is φ = 149688.

The previous prime is 525029. The next prime is 525043. The reversal of 525042 is 240525.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 5³ + 2¹⁸ + 0 + 5⁴ + 4 + 2¹⁸ .

It is not an unprimeable number, because it can be changed into a prime (525043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 903 + ... + 1365.

2⁵²⁵⁰⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (673728).

525042 is an abundant number, since it is smaller than the sum of its proper divisors (822414).

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

525042 is a wasteful number, since it uses less digits than its factorization.

525042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 525042 is about 724.5978194833. The cubic root of 525042 is about 80.6735834821.

Adding to 525042 its reverse (240525), we get a palindrome (765567).

The spelling of 525042 in words is "five hundred twenty-five thousand, forty-two".