105144185 has 4 divisors (see below), whose sum is σ = 126173028. Its totient is φ = 84115344.

The previous prime is 105144173. The next prime is 105144197. The reversal of 105144185 is 581441501.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (105144173) and next prime (105144197).

It can be written as a sum of positive squares in 2 ways, for example, as 62267881 + 42876304 = 7891^2 + 6548^2 .

It is a cyclic number.

It is not a de Polignac number, because 105144185 - 2¹⁰ = 105143161 is a prime.

It is a super-2 number, since 2×105144185² = 22110599278628450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10514414 + ... + 10514423.

It is an arithmetic number, because the mean of its divisors is an integer number (31543257).

Almost surely, 2^105144185 is an apocalyptic number.

It is an amenable number.

105144185 is a deficient number, since it is larger than the sum of its proper divisors (21028843).

105144185 is an equidigital number, since it uses as much as digits as its factorization.

105144185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21028842.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 105144185 is about 10253.9838599444. The cubic root of 105144185 is about 471.9852423448.

Adding to 105144185 its reverse (581441501), we get a palindrome (686585686).

The spelling of 105144185 in words is "one hundred five million, one hundred forty-four thousand, one hundred eighty-five".