1320461 has 4 divisors (see below), whose sum is σ = 1334172. Its totient is φ = 1306752.

The previous prime is 1320437. The next prime is 1320533. The reversal of 1320461 is 1640231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 175561 + 1144900 = 419^2 + 1070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320421) 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, 6710 + ... + 6903.

It is an arithmetic number, because the mean of its divisors is an integer number (333543).

2^1320461 is an apocalyptic number.

It is an amenable number.

1320461 is a deficient number, since it is larger than the sum of its proper divisors (13711).

1320461 is an equidigital number, since it uses as much as digits as its factorization.

1320461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13710.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1320461 is about 1149.1131362925. The cubic root of 1320461 is about 109.7088997432.

Adding to 1320461 its reverse (1640231), we get a palindrome (2960692).

The spelling of 1320461 in words is "one million, three hundred twenty thousand, four hundred sixty-one".