243000105 has 16 divisors (see below), whose sum is σ = 397073664. Its totient is φ = 126842240.

The previous prime is 243000067. The next prime is 243000151. The reversal of 243000105 is 501000342.

It is not a de Polignac number, because 243000105 - 2⁸ = 242999849 is a prime.

It is a super-2 number, since 2×243000105² = 118098102060022050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 171636 + ... + 173045.

It is an arithmetic number, because the mean of its divisors is an integer number (24817104).

Almost surely, 2^243000105 is an apocalyptic number.

It is an amenable number.

243000105 is a deficient number, since it is larger than the sum of its proper divisors (154073559).

243000105 is a wasteful number, since it uses less digits than its factorization.

243000105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344736.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 243000105 is about 15588.4606359961. The cubic root of 243000105 is about 624.0252367957.

Adding to 243000105 its reverse (501000342), we get a palindrome (744000447).

The spelling of 243000105 in words is "two hundred forty-three million, one hundred five", and thus it is an aban number.