1312745 has 8 divisors (see below), whose sum is σ = 1800384. Its totient is φ = 900144.

The previous prime is 1312739. The next prime is 1312769. The reversal of 1312745 is 5472131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1312745 - 2⁶ = 1312681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312745.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18719 + ... + 18788.

It is an arithmetic number, because the mean of its divisors is an integer number (225048).

2^1312745 is an apocalyptic number.

It is an amenable number.

1312745 is a deficient number, since it is larger than the sum of its proper divisors (487639).

1312745 is an equidigital number, since it uses as much as digits as its factorization.

1312745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37519.

The product of its digits is 840, while the sum is 23.

The square root of 1312745 is about 1145.7508455157. The cubic root of 1312745 is about 109.4947906587.

Adding to 1312745 its reverse (5472131), we get a palindrome (6784876).

The spelling of 1312745 in words is "one million, three hundred twelve thousand, seven hundred forty-five".