133401241 has 2 divisors, whose sum is σ = 133401242. Its totient is φ = 133401240.

The previous prime is 133401239. The next prime is 133401251. The reversal of 133401241 is 142104331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132158016 + 1243225 = 11496^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 133401241 - 2¹ = 133401239 is a prime.

It is a super-2 number, since 2×133401241² = 35591782200680162, which contains 22 as substring.

Together with 133401239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (133401211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66700620 + 66700621.

It is an arithmetic number, because the mean of its divisors is an integer number (66700621).

Almost surely, 2^133401241 is an apocalyptic number.

It is an amenable number.

133401241 is a deficient number, since it is larger than the sum of its proper divisors (1).

133401241 is an equidigital number, since it uses as much as digits as its factorization.

133401241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 133401241 is about 11549.9454977069. The cubic root of 133401241 is about 510.9596706849.

Adding to 133401241 its reverse (142104331), we get a palindrome (275505572).

The spelling of 133401241 in words is "one hundred thirty-three million, four hundred one thousand, two hundred forty-one".