133605241 has 16 divisors (see below), whose sum is σ = 167322240. Its totient is φ = 103639680.

The previous prime is 133605239. The next prime is 133605247. The reversal of 133605241 is 142506331.

It is a cyclic number.

It is not a de Polignac number, because 133605241 - 2¹ = 133605239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133605247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13845 + ... + 21421.

It is an arithmetic number, because the mean of its divisors is an integer number (10457640).

Almost surely, 2^133605241 is an apocalyptic number.

133605241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133605241 is a deficient number, since it is larger than the sum of its proper divisors (33716999).

133605241 is a wasteful number, since it uses less digits than its factorization.

133605241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7824.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 133605241 is about 11558.7733345715. The cubic root of 133605241 is about 511.2199948117.

The spelling of 133605241 in words is "one hundred thirty-three million, six hundred five thousand, two hundred forty-one".