105800043 has 4 divisors (see below), whose sum is σ = 141066728. Its totient is φ = 70533360.

The previous prime is 105800003. The next prime is 105800063. The reversal of 105800043 is 340008501.

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

It is not a de Polignac number, because 105800043 - 2⁹ = 105799531 is a prime.

It is a super-2 number, since 2×105800043² = 22387298197603698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105799992 and 105800019.

It is not an unprimeable number, because it can be changed into a prime (105800003) 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, 17633338 + ... + 17633343.

It is an arithmetic number, because the mean of its divisors is an integer number (35266682).

Almost surely, 2^105800043 is an apocalyptic number.

105800043 is a deficient number, since it is larger than the sum of its proper divisors (35266685).

105800043 is an equidigital number, since it uses as much as digits as its factorization.

105800043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35266684.

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

The square root of 105800043 is about 10285.9147867363. The cubic root of 105800043 is about 472.9645765181.

Adding to 105800043 its reverse (340008501), we get a palindrome (445808544).

The spelling of 105800043 in words is "one hundred five million, eight hundred thousand, forty-three".