133980241 has 2 divisors, whose sum is σ = 133980242. Its totient is φ = 133980240.

The previous prime is 133980181. The next prime is 133980257. The reversal of 133980241 is 142089331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120912016 + 13068225 = 10996^2 + 3615^2 .

It is a cyclic number.

It is not a de Polignac number, because 133980241 - 2¹⁷ = 133849169 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133980271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66990120 + 66990121.

It is an arithmetic number, because the mean of its divisors is an integer number (66990121).

Almost surely, 2^133980241 is an apocalyptic number.

It is an amenable number.

133980241 is a deficient number, since it is larger than the sum of its proper divisors (1).

133980241 is an equidigital number, since it uses as much as digits as its factorization.

133980241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 133980241 is about 11574.9834125151. The cubic root of 133980241 is about 511.6978413786.

The spelling of 133980241 in words is "one hundred thirty-three million, nine hundred eighty thousand, two hundred forty-one".