105503043 has 8 divisors (see below), whose sum is σ = 142365888. Its totient is φ = 69487784.

The previous prime is 105503039. The next prime is 105503051. The reversal of 105503043 is 340305501.

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

It is a cyclic number.

It is not a de Polignac number, because 105503043 - 2² = 105503039 is a prime.

It is a super-2 number, since 2×105503043² = 22261784164519698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105503023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211605 + ... + 212102.

It is an arithmetic number, because the mean of its divisors is an integer number (17795736).

Almost surely, 2^105503043 is an apocalyptic number.

105503043 is a deficient number, since it is larger than the sum of its proper divisors (36862845).

105503043 is an equidigital number, since it uses as much as digits as its factorization.

105503043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423793.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 105503043 is about 10271.4674219412. The cubic root of 105503043 is about 472.5215958327.

Adding to 105503043 its reverse (340305501), we get a palindrome (445808544).

The spelling of 105503043 in words is "one hundred five million, five hundred three thousand, forty-three".