133242233 has 2 divisors, whose sum is σ = 133242234. Its totient is φ = 133242232.

The previous prime is 133242229. The next prime is 133242257. The reversal of 133242233 is 332242331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123921424 + 9320809 = 11132^2 + 3053^2 .

It is a cyclic number.

It is not a de Polignac number, because 133242233 - 2² = 133242229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133242199 and 133242208.

It is not a weakly prime, because it can be changed into another prime (133242223) 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 as a sum of consecutive naturals, namely, 66621116 + 66621117.

It is an arithmetic number, because the mean of its divisors is an integer number (66621117).

Almost surely, 2^133242233 is an apocalyptic number.

It is an amenable number.

133242233 is a deficient number, since it is larger than the sum of its proper divisors (1).

133242233 is an equidigital number, since it uses as much as digits as its factorization.

133242233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 23.

The square root of 133242233 is about 11543.0599495974. The cubic root of 133242233 is about 510.7565766786.

Adding to 133242233 its reverse (332242331), we get a palindrome (465484564).

The spelling of 133242233 in words is "one hundred thirty-three million, two hundred forty-two thousand, two hundred thirty-three".