133166241 has 16 divisors (see below), whose sum is σ = 212459520. Its totient is φ = 81948240.

The previous prime is 133166221. The next prime is 133166261. The reversal of 133166241 is 142661331.

133166241 is a `hidden beast` number, since 1 + 3 + 31 + 6 + 624 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (133166221) and next prime (133166261).

It is not a de Polignac number, because 133166241 - 2¹¹ = 133164193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133166221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189345 + ... + 190046.

It is an arithmetic number, because the mean of its divisors is an integer number (13278720).

Almost surely, 2^133166241 is an apocalyptic number.

It is an amenable number.

133166241 is a deficient number, since it is larger than the sum of its proper divisors (79293279).

133166241 is a wasteful number, since it uses less digits than its factorization.

133166241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379413 (or 379407 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 133166241 is about 11539.7678052897. The cubic root of 133166241 is about 510.6594583349.

The spelling of 133166241 in words is "one hundred thirty-three million, one hundred sixty-six thousand, two hundred forty-one".