133420433 has 2 divisors, whose sum is σ = 133420434. Its totient is φ = 133420432.

The previous prime is 133420423. The next prime is 133420439. The reversal of 133420433 is 334024331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71436304 + 61984129 = 8452^2 + 7873^2 .

It is a cyclic number.

It is not a de Polignac number, because 133420433 - 2²⁰ = 132371857 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 = 133420399 and 133420408.

It is not a weakly prime, because it can be changed into another prime (133420439) 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, 66710216 + 66710217.

It is an arithmetic number, because the mean of its divisors is an integer number (66710217).

Almost surely, 2^133420433 is an apocalyptic number.

It is an amenable number.

133420433 is a deficient number, since it is larger than the sum of its proper divisors (1).

133420433 is an equidigital number, since it uses as much as digits as its factorization.

133420433 is an odious number, because the sum of its binary digits is odd.

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

The square root of 133420433 is about 11550.7762942583. The cubic root of 133420433 is about 510.9841728751.

Adding to 133420433 its reverse (334024331), we get a palindrome (467444764).

The spelling of 133420433 in words is "one hundred thirty-three million, four hundred twenty thousand, four hundred thirty-three".