1304001 has 6 divisors (see below), whose sum is σ = 1883570. Its totient is φ = 869328.

The previous prime is 1303987. The next prime is 1304003. The reversal of 1304001 is 1004031.

It can be written as a sum of positive squares in only one way, i.e., 1199025 + 104976 = 1095^2 + 324^2 .

It is not a de Polignac number, because 1304001 - 2⁷ = 1303873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 144889 = 1304001 / (1 + 3 + 0 + 4 + 0 + 0 + 1).

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304003) 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, 72436 + ... + 72453.

2^1304001 is an apocalyptic number.

It is an amenable number.

1304001 is a deficient number, since it is larger than the sum of its proper divisors (579569).

1304001 is a wasteful number, since it uses less digits than its factorization.

1304001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144895 (or 144892 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1304001 is about 1141.9286317454. The cubic root of 1304001 is about 109.2511393528.

Adding to 1304001 its reverse (1004031), we get a palindrome (2308032).

The spelling of 1304001 in words is "one million, three hundred four thousand, one".