105378243 has 16 divisors (see below), whose sum is σ = 142162080. Its totient is φ = 69428736.

The previous prime is 105378239. The next prime is 105378281. The reversal of 105378243 is 342873501.

It is not a de Polignac number, because 105378243 - 2² = 105378239 is a prime.

It is a super-2 number, since 2×105378243² = 22209148195534098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105378283) 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, 107371 + ... + 108347.

It is an arithmetic number, because the mean of its divisors is an integer number (8885130).

Almost surely, 2^105378243 is an apocalyptic number.

105378243 is a deficient number, since it is larger than the sum of its proper divisors (36783837).

105378243 is a wasteful number, since it uses less digits than its factorization.

105378243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 105378243 is about 10265.3905429847. The cubic root of 105378243 is about 472.3352063821.

The spelling of 105378243 in words is "one hundred five million, three hundred seventy-eight thousand, two hundred forty-three".