1323745 has 4 divisors (see below), whose sum is σ = 1588500. Its totient is φ = 1058992.

The previous prime is 1323743. The next prime is 1323779. The reversal of 1323745 is 5473231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5473231 = 347 ⋅15773.

It can be written as a sum of positive squares in 2 ways, for example, as 677329 + 646416 = 823^2 + 804^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323745 - 2¹ = 1323743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1323743) 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, 132370 + ... + 132379.

It is an arithmetic number, because the mean of its divisors is an integer number (397125).

2^1323745 is an apocalyptic number.

It is an amenable number.

1323745 is a deficient number, since it is larger than the sum of its proper divisors (264755).

1323745 is an equidigital number, since it uses as much as digits as its factorization.

1323745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264754.

The product of its digits is 2520, while the sum is 25.

The square root of 1323745 is about 1150.5411770119. The cubic root of 1323745 is about 109.7997735017.

Adding to 1323745 its reverse (5473231), we get a palindrome (6796976).

The spelling of 1323745 in words is "one million, three hundred twenty-three thousand, seven hundred forty-five".