133255242 has 24 divisors (see below), whose sum is σ = 290832516. Its totient is φ = 44093376.

The previous prime is 133255229. The next prime is 133255247. The reversal of 133255242 is 242552331.

It is a happy number.

133255242 is a `hidden beast` number, since 133 + 2 + 5 + 524 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 119705481 + 13549761 = 10941^2 + 3681^2 .

It is not an unprimeable number, because it can be changed into a prime (133255247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24553 + ... + 29484.

Almost surely, 2^133255242 is an apocalyptic number.

133255242 is an abundant number, since it is smaller than the sum of its proper divisors (157577274).

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

133255242 is a wasteful number, since it uses less digits than its factorization.

133255242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54182 (or 54179 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 133255242 is about 11543.6234346067. The cubic root of 133255242 is about 510.7731985757.

The spelling of 133255242 in words is "one hundred thirty-three million, two hundred fifty-five thousand, two hundred forty-two".