133241 has 2 divisors, whose sum is σ = 133242. Its totient is φ = 133240.

The previous prime is 133213. The next prime is 133253. The reversal of 133241 is 142331.

133241 is nontrivially palindromic in base 11.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133225 + 16 = 365^2 + 4^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133241 is a prime.

It is a Chen prime.

It is equal to p₁₂₄₃₄ and since 133241 and 12434 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (133201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66620 + 66621.

It is an arithmetic number, because the mean of its divisors is an integer number (66621).

2¹³³²⁴¹ is an apocalyptic number.

It is an amenable number.

133241 is a deficient number, since it is larger than the sum of its proper divisors (1).

133241 is an equidigital number, since it uses as much as digits as its factorization.

133241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 14.

The square root of 133241 is about 365.0219171502. The cubic root of 133241 is about 51.0755001190.

Adding to 133241 its reverse (142331), we get a palindrome (275572).

The spelling of 133241 in words is "one hundred thirty-three thousand, two hundred forty-one".