105188145 has 8 divisors (see below), whose sum is σ = 168301056. Its totient is φ = 56100336.

The previous prime is 105188143. The next prime is 105188179. The reversal of 105188145 is 541881501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105188145 - 2¹ = 105188143 is a prime.

It is a super-2 number, since 2×105188145² = 22129091697082050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105188143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3506257 + ... + 3506286.

It is an arithmetic number, because the mean of its divisors is an integer number (21037632).

Almost surely, 2^105188145 is an apocalyptic number.

105188145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105188145 is a deficient number, since it is larger than the sum of its proper divisors (63112911).

105188145 is an equidigital number, since it uses as much as digits as its factorization.

105188145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7012551.

The product of its (nonzero) digits is 6400, while the sum is 33.

The square root of 105188145 is about 10256.1271930490. The cubic root of 105188145 is about 472.0510110170.

The spelling of 105188145 in words is "one hundred five million, one hundred eighty-eight thousand, one hundred forty-five".