133320442 has 8 divisors (see below), whose sum is σ = 201178656. Its totient is φ = 66260892.

The previous prime is 133320433. The next prime is 133320449. The reversal of 133320442 is 244023331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (133320449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199248 + ... + 199915.

It is an arithmetic number, because the mean of its divisors is an integer number (25147332).

Almost surely, 2^133320442 is an apocalyptic number.

133320442 is a deficient number, since it is larger than the sum of its proper divisors (67858214).

133320442 is a wasteful number, since it uses less digits than its factorization.

133320442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399332.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 133320442 is about 11546.4471591914. The cubic root of 133320442 is about 510.8564898145.

Adding to 133320442 its reverse (244023331), we get a palindrome (377343773).

The spelling of 133320442 in words is "one hundred thirty-three million, three hundred twenty thousand, four hundred forty-two".