133320242 has 24 divisors (see below), whose sum is σ = 221184432. Its totient is φ = 59771400.

The previous prime is 133320241. The next prime is 133320251. The reversal of 133320242 is 242023331.

It is not an unprimeable number, because it can be changed into a prime (133320241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136817 + ... + 137787.

It is an arithmetic number, because the mean of its divisors is an integer number (9216018).

Almost surely, 2^133320242 is an apocalyptic number.

133320242 is a deficient number, since it is larger than the sum of its proper divisors (87864190).

133320242 is an equidigital number, since it uses as much as digits as its factorization.

133320242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142 (or 1063 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 133320242 is about 11546.4384985155. The cubic root of 133320242 is about 510.8562343614.

Adding to 133320242 its reverse (242023331), we get a palindrome (375343573).

The spelling of 133320242 in words is "one hundred thirty-three million, three hundred twenty thousand, two hundred forty-two".