102105065 has 4 divisors (see below), whose sum is σ = 122526084. Its totient is φ = 81684048.

The previous prime is 102105049. The next prime is 102105121. The reversal of 102105065 is 560501201.

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 47389456 + 54715609 = 6884^2 + 7397^2 .

It is a cyclic number.

It is not a de Polignac number, because 102105065 - 2⁴ = 102105049 is a prime.

It is a Duffinian number.

It is a Curzon 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, 10210502 + ... + 10210511.

It is an arithmetic number, because the mean of its divisors is an integer number (30631521).

Almost surely, 2^102105065 is an apocalyptic number.

It is an amenable number.

102105065 is a deficient number, since it is larger than the sum of its proper divisors (20421019).

102105065 is an equidigital number, since it uses as much as digits as its factorization.

102105065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20421018.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 102105065 is about 10104.7050921835. The cubic root of 102105065 is about 467.3932420396.

Adding to 102105065 its reverse (560501201), we get a palindrome (662606266).

The spelling of 102105065 in words is "one hundred two million, one hundred five thousand, sixty-five".