133201242 has 12 divisors (see below), whose sum is σ = 288602730. Its totient is φ = 44400408.

The previous prime is 133201241. The next prime is 133201261. The reversal of 133201242 is 242102331.

It can be written as a sum of positive squares in only one way, i.e., 133194681 + 6561 = 11541^2 + 81^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 7400069 = 133201242 / (1 + 3 + 3 + 2 + 0 + 1 + 2 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (133201241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3700017 + ... + 3700052.

Almost surely, 2^133201242 is an apocalyptic number.

133201242 is an abundant number, since it is smaller than the sum of its proper divisors (155401488).

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

133201242 is a wasteful number, since it uses less digits than its factorization.

133201242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7400077 (or 7400074 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 133201242 is about 11541.2842439652. The cubic root of 133201242 is about 510.7041944628.

Adding to 133201242 its reverse (242102331), we get a palindrome (375303573).

The spelling of 133201242 in words is "one hundred thirty-three million, two hundred one thousand, two hundred forty-two".