133720543 has 8 divisors (see below), whose sum is σ = 148055040. Its totient is φ = 119749080.

The previous prime is 133720513. The next prime is 133720547. The reversal of 133720543 is 345027331.

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

It is not a de Polignac number, because 133720543 - 2⁹ = 133720031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133720547) 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 7 ways as a sum of consecutive naturals, for example, 89983 + ... + 91456.

It is an arithmetic number, because the mean of its divisors is an integer number (18506880).

Almost surely, 2^133720543 is an apocalyptic number.

133720543 is a deficient number, since it is larger than the sum of its proper divisors (14334497).

133720543 is a wasteful number, since it uses less digits than its factorization.

133720543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181517.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 133720543 is about 11563.7598989256. The cubic root of 133720543 is about 511.3670143422.

Adding to 133720543 its reverse (345027331), we get a palindrome (478747874).

The spelling of 133720543 in words is "one hundred thirty-three million, seven hundred twenty thousand, five hundred forty-three".