133660243 has 8 divisors (see below), whose sum is σ = 139324112. Its totient is φ = 128104416.

The previous prime is 133660237. The next prime is 133660249. The reversal of 133660243 is 342066331.

It is an interprime number because it is at equal distance from previous prime (133660237) and next prime (133660249).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133660243 - 2⁹ = 133659731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133660249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24480 + ... + 29437.

It is an arithmetic number, because the mean of its divisors is an integer number (17415514).

Almost surely, 2^133660243 is an apocalyptic number.

133660243 is a deficient number, since it is larger than the sum of its proper divisors (5663869).

133660243 is an equidigital number, since it uses as much as digits as its factorization.

133660243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54021.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 133660243 is about 11561.1523214600. The cubic root of 133660243 is about 511.2901374306.

It can be divided in two parts, 133660 and 243, that added together give a triangular number (133903 = T₅₁₇).

The spelling of 133660243 in words is "one hundred thirty-three million, six hundred sixty thousand, two hundred forty-three".