1209065 has 32 divisors (see below), whose sum is σ = 1814400. Its totient is φ = 760320.

The previous prime is 1209053. The next prime is 1209073. The reversal of 1209065 is 5609021.

It is not a de Polignac number, because 1209065 - 2¹² = 1204969 is a prime.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 1209065.

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 31 ways as a sum of consecutive naturals, for example, 13541 + ... + 13629.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2^1209065 is an apocalyptic number.

It is an amenable number.

1209065 is a deficient number, since it is larger than the sum of its proper divisors (605335).

1209065 is a wasteful number, since it uses less digits than its factorization.

1209065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1209065 is about 1099.5749178660. The cubic root of 1209065 is about 106.5327692735.

The spelling of 1209065 in words is "one million, two hundred nine thousand, sixty-five".