133126013 has 2 divisors, whose sum is σ = 133126014. Its totient is φ = 133126012.

The previous prime is 133126009. The next prime is 133126039. The reversal of 133126013 is 310621331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102677689 + 30448324 = 10133^2 + 5518^2 .

It is a cyclic number.

It is not a de Polignac number, because 133126013 - 2² = 133126009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133126913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66563006 + 66563007.

It is an arithmetic number, because the mean of its divisors is an integer number (66563007).

Almost surely, 2^133126013 is an apocalyptic number.

It is an amenable number.

133126013 is a deficient number, since it is larger than the sum of its proper divisors (1).

133126013 is an equidigital number, since it uses as much as digits as its factorization.

133126013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 133126013 is about 11538.0246576266. The cubic root of 133126013 is about 510.6080316934.

Adding to 133126013 its reverse (310621331), we get a palindrome (443747344).

The spelling of 133126013 in words is "one hundred thirty-three million, one hundred twenty-six thousand, thirteen".