105243845 has 8 divisors (see below), whose sum is σ = 144334464. Its totient is φ = 72167184.

The previous prime is 105243841. The next prime is 105243863. The reversal of 105243845 is 548342501.

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 105243845 - 2² = 105243841 is a prime.

It is a super-2 number, since 2×105243845² = 22152533820768050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105243841) 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, 1503449 + ... + 1503518.

It is an arithmetic number, because the mean of its divisors is an integer number (18041808).

Almost surely, 2^105243845 is an apocalyptic number.

It is an amenable number.

105243845 is a deficient number, since it is larger than the sum of its proper divisors (39090619).

105243845 is an equidigital number, since it uses as much as digits as its factorization.

105243845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006979.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 105243845 is about 10258.8422836108. The cubic root of 105243845 is about 472.1343176219.

The spelling of 105243845 in words is "one hundred five million, two hundred forty-three thousand, eight hundred forty-five".