133240208 has 10 divisors (see below), whose sum is σ = 258152934. Its totient is φ = 66620096.

The previous prime is 133240207. The next prime is 133240213. The reversal of 133240208 is 802042331.

133240208 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 112190464 + 21049744 = 10592^2 + 4588^2 .

It is not an unprimeable number, because it can be changed into a prime (133240207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4163741 + ... + 4163772.

Almost surely, 2^133240208 is an apocalyptic number.

It is an amenable number.

133240208 is a deficient number, since it is larger than the sum of its proper divisors (124912726).

133240208 is an equidigital number, since it uses as much as digits as its factorization.

133240208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8327521 (or 8327515 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 133240208 is about 11542.9722342211. The cubic root of 133240208 is about 510.7539891924.

Adding to 133240208 its reverse (802042331), we get a palindrome (935282539).

The spelling of 133240208 in words is "one hundred thirty-three million, two hundred forty thousand, two hundred eight".