133530143 has 2 divisors, whose sum is σ = 133530144. Its totient is φ = 133530142.

The previous prime is 133530139. The next prime is 133530169. The reversal of 133530143 is 341035331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133530143 - 2² = 133530139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133530443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66765071 + 66765072.

It is an arithmetic number, because the mean of its divisors is an integer number (66765072).

Almost surely, 2^133530143 is an apocalyptic number.

133530143 is a deficient number, since it is larger than the sum of its proper divisors (1).

133530143 is an equidigital number, since it uses as much as digits as its factorization.

133530143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 133530143 is about 11555.5243498510. The cubic root of 133530143 is about 511.1241931942.

Adding to 133530143 its reverse (341035331), we get a palindrome (474565474).

The spelling of 133530143 in words is "one hundred thirty-three million, five hundred thirty thousand, one hundred forty-three".