1320481 has 4 divisors (see below), whose sum is σ = 1390000. Its totient is φ = 1250964.

The previous prime is 1320437. The next prime is 1320533. The reversal of 1320481 is 1840231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1320481 - 2⁷ = 1320353 is a prime.

It is a super-2 number, since 2×1320481² = 3487340142722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 69499 = 1320481 / (1 + 3 + 2 + 0 + 4 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34731 + ... + 34768.

It is an arithmetic number, because the mean of its divisors is an integer number (347500).

2^1320481 is an apocalyptic number.

It is an amenable number.

1320481 is a deficient number, since it is larger than the sum of its proper divisors (69519).

1320481 is an equidigital number, since it uses as much as digits as its factorization.

1320481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69518.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1320481 is about 1149.1218386229. The cubic root of 1320481 is about 109.7094536323.

The spelling of 1320481 in words is "one million, three hundred twenty thousand, four hundred eighty-one".