111240543 has 4 divisors (see below), whose sum is σ = 148320728. Its totient is φ = 74160360.

The previous prime is 111240541. The next prime is 111240551. The reversal of 111240543 is 345042111.

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

It is not a de Polignac number, because 111240543 - 2¹ = 111240541 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 (111240541) 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, 18540088 + ... + 18540093.

It is an arithmetic number, because the mean of its divisors is an integer number (37080182).

Almost surely, 2^111240543 is an apocalyptic number.

111240543 is a deficient number, since it is larger than the sum of its proper divisors (37080185).

111240543 is an equidigital number, since it uses as much as digits as its factorization.

111240543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37080184.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 111240543 is about 10547.0632405424. The cubic root of 111240543 is about 480.9364574178.

Adding to 111240543 its reverse (345042111), we get a palindrome (456282654).

The spelling of 111240543 in words is "one hundred eleven million, two hundred forty thousand, five hundred forty-three".