1320499 has 4 divisors (see below), whose sum is σ = 1377936. Its totient is φ = 1263064.

The previous prime is 1320437. The next prime is 1320533. The reversal of 1320499 is 9940231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1320499 - 2¹¹ = 1318451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320409) 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, 28684 + ... + 28729.

It is an arithmetic number, because the mean of its divisors is an integer number (344484).

2^1320499 is an apocalyptic number.

1320499 is a deficient number, since it is larger than the sum of its proper divisors (57437).

1320499 is an equidigital number, since it uses as much as digits as its factorization.

1320499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57436.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1320499 is about 1149.1296706638. The cubic root of 1320499 is about 109.7099521278.

The spelling of 1320499 in words is "one million, three hundred twenty thousand, four hundred ninety-nine".