1392065 has 4 divisors (see below), whose sum is σ = 1670484. Its totient is φ = 1113648.

The previous prime is 1392007. The next prime is 1392089. The reversal of 1392065 is 5602931.

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 935089 + 456976 = 967^2 + 676^2 .

It is a cyclic number.

It is not a de Polignac number, because 1392065 - 2¹⁰ = 1391041 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 139202 + ... + 139211.

It is an arithmetic number, because the mean of its divisors is an integer number (417621).

2^1392065 is an apocalyptic number.

It is an amenable number.

1392065 is a deficient number, since it is larger than the sum of its proper divisors (278419).

1392065 is an equidigital number, since it uses as much as digits as its factorization.

1392065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278418.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1392065 is about 1179.8580423085. The cubic root of 1392065 is about 111.6571413374.

Adding to 1392065 its reverse (5602931), we get a palindrome (6994996).

The spelling of 1392065 in words is "one million, three hundred ninety-two thousand, sixty-five".