133143 has 4 divisors (see below), whose sum is σ = 177528. Its totient is φ = 88760.

The previous prime is 133121. The next prime is 133153. The reversal of 133143 is 341331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341331 = 3 ⋅113777.

It is a cyclic number.

It is not a de Polignac number, because 133143 - 2⁸ = 132887 is a prime.

It is a D-number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133103) 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, 22188 + ... + 22193.

It is an arithmetic number, because the mean of its divisors is an integer number (44382).

2¹³³¹⁴³ is an apocalyptic number.

133143 is a deficient number, since it is larger than the sum of its proper divisors (44385).

133143 is an equidigital number, since it uses as much as digits as its factorization.

133143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44384.

The product of its digits is 108, while the sum is 15.

The square root of 133143 is about 364.8876539430. The cubic root of 133143 is about 51.0629748786.

Adding to 133143 its reverse (341331), we get a palindrome (474474).

It can be divided in two parts, 133 and 143, that added together give a triangular number (276 = T₂₃).

The spelling of 133143 in words is "one hundred thirty-three thousand, one hundred forty-three".