108640043 has 4 divisors (see below), whose sum is σ = 114357960. Its totient is φ = 102922128.

The previous prime is 108640033. The next prime is 108640067. The reversal of 108640043 is 340046801.

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

It is a cyclic number.

It is not a de Polignac number, because 108640043 - 2¹⁰ = 108639019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 108639994 and 108640021.

It is not an unprimeable number, because it can be changed into a prime (108640033) 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, 2858930 + ... + 2858967.

It is an arithmetic number, because the mean of its divisors is an integer number (28589490).

Almost surely, 2^108640043 is an apocalyptic number.

108640043 is a deficient number, since it is larger than the sum of its proper divisors (5717917).

108640043 is an equidigital number, since it uses as much as digits as its factorization.

108640043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5717916.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 108640043 is about 10423.0534393718. The cubic root of 108640043 is about 477.1592086047.

Adding to 108640043 its reverse (340046801), we get a palindrome (448686844).

The spelling of 108640043 in words is "one hundred eight million, six hundred forty thousand, forty-three".