102120065 has 16 divisors (see below), whose sum is σ = 125257728. Its totient is φ = 79906176.

The previous prime is 102120059. The next prime is 102120077. The reversal of 102120065 is 560021201.

It is a cyclic number.

It is not a de Polignac number, because 102120065 - 2⁶ = 102120001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 45254 + ... + 47456.

It is an arithmetic number, because the mean of its divisors is an integer number (7828608).

Almost surely, 2^102120065 is an apocalyptic number.

It is an amenable number.

102120065 is a deficient number, since it is larger than the sum of its proper divisors (23137663).

102120065 is a wasteful number, since it uses less digits than its factorization.

102120065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 102120065 is about 10105.4472934156. The cubic root of 102120065 is about 467.4161287767.

Adding to 102120065 its reverse (560021201), we get a palindrome (662141266).

The spelling of 102120065 in words is "one hundred two million, one hundred twenty thousand, sixty-five".