1304723 has 6 divisors (see below), whose sum is σ = 1517796. Its totient is φ = 1118292.

The previous prime is 1304713. The next prime is 1304741. The reversal of 1304723 is 3274031.

It is not a de Polignac number, because 1304723 - 2⁴ = 1304707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1304695 and 1304704.

It is not an unprimeable number, because it can be changed into a prime (1304713) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 13265 + ... + 13362.

It is an arithmetic number, because the mean of its divisors is an integer number (252966).

2^1304723 is an apocalyptic number.

1304723 is a deficient number, since it is larger than the sum of its proper divisors (213073).

1304723 is an equidigital number, since it uses as much as digits as its factorization.

1304723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26641 (or 26634 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 1304723 is about 1142.2447198390. The cubic root of 1304723 is about 109.2712990431.

Adding to 1304723 its reverse (3274031), we get a palindrome (4578754).

The spelling of 1304723 in words is "one million, three hundred four thousand, seven hundred twenty-three".