133534143 has 16 divisors (see below), whose sum is σ = 204211200. Its totient is φ = 86150520.

The previous prime is 133534139. The next prime is 133534151. The reversal of 133534143 is 341435331.

It is not a de Polignac number, because 133534143 - 2² = 133534139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133534123) 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, 78933 + ... + 80606.

It is an arithmetic number, because the mean of its divisors is an integer number (12763200).

Almost surely, 2^133534143 is an apocalyptic number.

133534143 is a deficient number, since it is larger than the sum of its proper divisors (70677057).

133534143 is a wasteful number, since it uses less digits than its factorization.

133534143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159579 (or 159573 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 133534143 is about 11555.6974259454. The cubic root of 133534143 is about 511.1292968517.

Adding to 133534143 its reverse (341435331), we get a palindrome (474969474).

The spelling of 133534143 in words is "one hundred thirty-three million, five hundred thirty-four thousand, one hundred forty-three".