1320741 has 6 divisors (see below), whose sum is σ = 1907750. Its totient is φ = 880488.

The previous prime is 1320731. The next prime is 1320749. The reversal of 1320741 is 1470231.

It can be written as a sum of positive squares in only one way, i.e., 893025 + 427716 = 945^2 + 654^2 .

It is not a de Polignac number, because 1320741 - 2¹⁴ = 1304357 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73366 + ... + 73383.

2^1320741 is an apocalyptic number.

It is an amenable number.

1320741 is a deficient number, since it is larger than the sum of its proper divisors (587009).

1320741 is a wasteful number, since it uses less digits than its factorization.

1320741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146755 (or 146752 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1320741 is about 1149.2349629210. The cubic root of 1320741 is about 109.7166536819.

Adding to 1320741 its reverse (1470231), we get a palindrome (2790972).

The spelling of 1320741 in words is "one million, three hundred twenty thousand, seven hundred forty-one".