538242 has 16 divisors (see below), whose sum is σ = 1087680. Its totient is φ = 177552.

The previous prime is 538201. The next prime is 538247. The reversal of 538242 is 242835.

It is a d-powerful number, because it can be written as 5⁸ + 3⁴ + 2¹⁴ + 8² + 4² + 2¹⁷ .

It is not an unprimeable number, because it can be changed into a prime (538247) by changing a digit.

538242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 243 + ... + 1065.

It is an arithmetic number, because the mean of its divisors is an integer number (67980).

2⁵³⁸²⁴² is an apocalyptic number.

538242 is an abundant number, since it is smaller than the sum of its proper divisors (549438).

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

538242 is a wasteful number, since it uses less digits than its factorization.

538242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937.

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

The square root of 538242 is about 733.6497802085. The cubic root of 538242 is about 81.3440630534.

It can be divided in two parts, 538 and 242, that added together give a triangular number (780 = T₃₉).

The spelling of 538242 in words is "five hundred thirty-eight thousand, two hundred forty-two".