1304981 has 2 divisors, whose sum is σ = 1304982. Its totient is φ = 1304980.

The previous prime is 1304969. The next prime is 1304983. The reversal of 1304981 is 1894031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 749956 + 555025 = 866^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304981 - 2¹⁴ = 1288597 is a prime.

It is a super-2 number, since 2×1304981² = 3405950820722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1304983, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1304981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1304983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652490 + 652491.

It is an arithmetic number, because the mean of its divisors is an integer number (652491).

2^1304981 is an apocalyptic number.

It is an amenable number.

1304981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304981 is an equidigital number, since it uses as much as digits as its factorization.

1304981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1304981 is about 1142.3576497752. The cubic root of 1304981 is about 109.2785011177.

The spelling of 1304981 in words is "one million, three hundred four thousand, nine hundred eighty-one".