133243242 has 16 divisors (see below), whose sum is σ = 290712672. Its totient is φ = 40376720.

The previous prime is 133243241. The next prime is 133243247. The reversal of 133243242 is 242342331.

It is not an unprimeable number, because it can be changed into a prime (133243241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009353 + ... + 1009484.

It is an arithmetic number, because the mean of its divisors is an integer number (18169542).

Almost surely, 2^133243242 is an apocalyptic number.

133243242 is an abundant number, since it is smaller than the sum of its proper divisors (157469430).

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

133243242 is a wasteful number, since it uses less digits than its factorization.

133243242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018853.

The product of its digits is 3456, while the sum is 24.

The square root of 133243242 is about 11543.1036554299. The cubic root of 133243242 is about 510.7578659397.

Adding to 133243242 its reverse (242342331), we get a palindrome (375585573).

The spelling of 133243242 in words is "one hundred thirty-three million, two hundred forty-three thousand, two hundred forty-two".