133502442 has 32 divisors (see below), whose sum is σ = 283886208. Its totient is φ = 41760576.

The previous prime is 133502431. The next prime is 133502449. The reversal of 133502442 is 244205331.

It is not an unprimeable number, because it can be changed into a prime (133502449) 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 15 ways as a sum of consecutive naturals, for example, 1813 + ... + 16440.

It is an arithmetic number, because the mean of its divisors is an integer number (8871444).

Almost surely, 2^133502442 is an apocalyptic number.

133502442 is an abundant number, since it is smaller than the sum of its proper divisors (150383766).

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

133502442 is a wasteful number, since it uses less digits than its factorization.

133502442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18334.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 133502442 is about 11554.3256834832. The cubic root of 133502442 is about 511.0888462926.

Adding to 133502442 its reverse (244205331), we get a palindrome (377707773).

The spelling of 133502442 in words is "one hundred thirty-three million, five hundred two thousand, four hundred forty-two".