113042543 has 4 divisors (see below), whose sum is σ = 113171448. Its totient is φ = 112913640.

The previous prime is 113042521. The next prime is 113042557. The reversal of 113042543 is 345240311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113042543 is a prime.

It is a super-3 number, since 3×113042543³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113042143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63128 + ... + 64893.

It is an arithmetic number, because the mean of its divisors is an integer number (28292862).

Almost surely, 2^113042543 is an apocalyptic number.

113042543 is a deficient number, since it is larger than the sum of its proper divisors (128905).

113042543 is an equidigital number, since it uses as much as digits as its factorization.

113042543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128904.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 113042543 is about 10632.1466788227. The cubic root of 113042543 is about 483.5194770405.

Adding to 113042543 its reverse (345240311), we get a palindrome (458282854).

The spelling of 113042543 in words is "one hundred thirteen million, forty-two thousand, five hundred forty-three".