133242 has 16 divisors (see below), whose sum is σ = 272160. Its totient is φ = 43472.

The previous prime is 133241. The next prime is 133253. The reversal of 133242 is 242331.

It is not an unprimeable number, because it can be changed into a prime (133241) 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 7 ways as a sum of consecutive naturals, for example, 109 + ... + 527.

It is an arithmetic number, because the mean of its divisors is an integer number (17010).

2¹³³²⁴² is an apocalyptic number.

133242 is an abundant number, since it is smaller than the sum of its proper divisors (138918).

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

133242 is a wasteful number, since it uses less digits than its factorization.

133242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477.

The product of its digits is 144, while the sum is 15.

The square root of 133242 is about 365.0232869284. The cubic root of 133242 is about 51.0756278959.

Adding to 133242 its product of digits (144), we get a triangular number (133386 = T₅₁₆).

Adding to 133242 its reverse (242331), we get a palindrome (375573).

The spelling of 133242 in words is "one hundred thirty-three thousand, two hundred forty-two".