105123405443 has 16 divisors (see below), whose sum is σ = 121022808576. Its totient is φ = 89445297600.

The previous prime is 105123405421. The next prime is 105123405469. The reversal of 105123405443 is 344504321501.

It is a cyclic number.

It is not a de Polignac number, because 105123405443 - 2¹⁶ = 105123339907 is a prime.

It is a super-3 number, since 3×105123405443³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105123405473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1479980 + ... + 1549382.

It is an arithmetic number, because the mean of its divisors is an integer number (7563925536).

Almost surely, 2^105123405443 is an apocalyptic number.

105123405443 is a deficient number, since it is larger than the sum of its proper divisors (15899403133).

105123405443 is a wasteful number, since it uses less digits than its factorization.

105123405443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70994.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 105123405443 its reverse (344504321501), we get a palindrome (449627726944).

The spelling of 105123405443 in words is "one hundred five billion, one hundred twenty-three million, four hundred five thousand, four hundred forty-three".