542520 has 96 divisors (see below), whose sum is σ = 1937520. Its totient is φ = 130560.

The previous prime is 542519. The next prime is 542533. The reversal of 542520 is 25245.

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

It is a junction number, because it is equal to n+sod(n) for n = 542493 and 542502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3892 + ... + 4028.

2⁵⁴²⁵²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968760).

542520 is an abundant number, since it is smaller than the sum of its proper divisors (1395000).

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

542520 is a wasteful number, since it uses less digits than its factorization.

542520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 158 counting only the distinct ones).

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

The square root of 542520 is about 736.5595698923. The cubic root of 542520 is about 81.5590047826.

Adding to 542520 its reverse (25245), we get a palindrome (567765).

It can be divided in two parts, 5425 and 20, that added together give a palindrome (5445).

The spelling of 542520 in words is "five hundred forty-two thousand, five hundred twenty".