1312445 has 4 divisors (see below), whose sum is σ = 1574940. Its totient is φ = 1049952.

The previous prime is 1312411. The next prime is 1312459. The reversal of 1312445 is 5442131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5442131 = 313 ⋅17387.

It can be written as a sum of positive squares in 2 ways, for example, as 574564 + 737881 = 758^2 + 859^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312445 - 2⁸ = 1312189 is a prime.

It is an Ulam number.

It is a congruent 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, 131240 + ... + 131249.

It is an arithmetic number, because the mean of its divisors is an integer number (393735).

2^1312445 is an apocalyptic number.

It is an amenable number.

1312445 is a deficient number, since it is larger than the sum of its proper divisors (262495).

1312445 is an equidigital number, since it uses as much as digits as its factorization.

1312445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262494.

The product of its digits is 480, while the sum is 20.

The square root of 1312445 is about 1145.6199195196. The cubic root of 1312445 is about 109.4864491199.

Adding to 1312445 its reverse (5442131), we get a palindrome (6754576).

The spelling of 1312445 in words is "one million, three hundred twelve thousand, four hundred forty-five".