133720033 has 2 divisors, whose sum is σ = 133720034. Its totient is φ = 133720032.

The previous prime is 133720031. The next prime is 133720039. The reversal of 133720033 is 330027331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123810129 + 9909904 = 11127^2 + 3148^2 .

It is a cyclic number.

It is not a de Polignac number, because 133720033 - 2¹ = 133720031 is a prime.

Together with 133720031, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 133719986 and 133720013.

It is not a weakly prime, because it can be changed into another prime (133720031) 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, 66860016 + 66860017.

It is an arithmetic number, because the mean of its divisors is an integer number (66860017).

Almost surely, 2^133720033 is an apocalyptic number.

It is an amenable number.

133720033 is a deficient number, since it is larger than the sum of its proper divisors (1).

133720033 is an equidigital number, since it uses as much as digits as its factorization.

133720033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 22.

The square root of 133720033 is about 11563.7378472534. The cubic root of 133720033 is about 511.3663642364.

Adding to 133720033 its reverse (330027331), we get a palindrome (463747364).

The spelling of 133720033 in words is "one hundred thirty-three million, seven hundred twenty thousand, thirty-three".