133068539 has 4 divisors (see below), whose sum is σ = 136665024. Its totient is φ = 129472056.

The previous prime is 133068521. The next prime is 133068557. The reversal of 133068539 is 935860331.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (133068521) and next prime (133068557).

It is a cyclic number.

It is not a de Polignac number, because 133068539 - 2⁸ = 133068283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133068569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1798187 + ... + 1798260.

It is an arithmetic number, because the mean of its divisors is an integer number (34166256).

Almost surely, 2^133068539 is an apocalyptic number.

133068539 is a deficient number, since it is larger than the sum of its proper divisors (3596485).

133068539 is an equidigital number, since it uses as much as digits as its factorization.

133068539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596484.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 133068539 is about 11535.5337544476. The cubic root of 133068539 is about 510.5345401455.

The spelling of 133068539 in words is "one hundred thirty-three million, sixty-eight thousand, five hundred thirty-nine".