105243065 has 4 divisors (see below), whose sum is σ = 126291684. Its totient is φ = 84194448.

The previous prime is 105243041. The next prime is 105243091. The reversal of 105243065 is 560342501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 59043856 + 46199209 = 7684^2 + 6797^2 .

It is a cyclic number.

It is not a de Polignac number, because 105243065 - 2¹⁶ = 105177529 is a prime.

It is a super-2 number, since 2×105243065² = 22152205461188450, 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, 10524302 + ... + 10524311.

It is an arithmetic number, because the mean of its divisors is an integer number (31572921).

Almost surely, 2^105243065 is an apocalyptic number.

It is an amenable number.

105243065 is a deficient number, since it is larger than the sum of its proper divisors (21048619).

105243065 is an equidigital number, since it uses as much as digits as its factorization.

105243065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21048618.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 105243065 is about 10258.8042675548. The cubic root of 105243065 is about 472.1331512332.

Adding to 105243065 its reverse (560342501), we get a palindrome (665585566).

The spelling of 105243065 in words is "one hundred five million, two hundred forty-three thousand, sixty-five".