43105 has 8 divisors (see below), whose sum is σ = 53352.
Its totient is φ = 33408.
The previous prime is 43103. The next prime is 43117. The reversal of 43105 is 50134.
It can be written as a sum of positive squares in 4 ways, for example, as 6241 + 36864 = 79^2 + 192^2
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 43105 - 21 = 43103 is a prime.
It is a Duffinian number.
It is a plaindrome in base 14.
It is a nialpdrome in base 16.
It is not an unprimeable number, because it can be changed into a prime (43103) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69 + ... + 301.
It is an arithmetic number, because the mean of its divisors is an integer number (6669).
243105 is an apocalyptic number.
It is an amenable number.
43105 is a deficient number, since it is larger than the sum of its proper divisors (10247).
43105 is a wasteful number, since it uses less digits than its factorization.
43105 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 275.
The product of its (nonzero) digits is 60, while the sum is 13.
The square root of 43105 is about 207.6174366473.
The cubic root of 43105 is about 35.0624734553.
Adding to 43105 its reverse (50134), we get a palindrome (93239).
The spelling of 43105 in words is "forty-three thousand, one hundred five".