1238065 has 4 divisors (see below), whose sum is σ = 1485684. Its totient is φ = 990448.

The previous prime is 1238063. The next prime is 1238071. The reversal of 1238065 is 5608321.

It is a happy number.

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 404496 + 833569 = 636^2 + 913^2 .

It is a cyclic number.

It is not a de Polignac number, because 1238065 - 2¹ = 1238063 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1238063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123802 + ... + 123811.

It is an arithmetic number, because the mean of its divisors is an integer number (371421).

2^1238065 is an apocalyptic number.

It is an amenable number.

1238065 is a deficient number, since it is larger than the sum of its proper divisors (247619).

1238065 is an equidigital number, since it uses as much as digits as its factorization.

1238065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247618.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1238065 is about 1112.6836926998. The cubic root of 1238065 is about 107.3777951499.

The spelling of 1238065 in words is "one million, two hundred thirty-eight thousand, sixty-five".