1330145 has 4 divisors (see below), whose sum is σ = 1596180. Its totient is φ = 1064112.

The previous prime is 1330129. The next prime is 1330157. The reversal of 1330145 is 5410331.

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 889249 + 440896 = 943^2 + 664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330145 - 2⁴ = 1330129 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133010 + ... + 133019.

It is an arithmetic number, because the mean of its divisors is an integer number (399045).

2^1330145 is an apocalyptic number.

It is an amenable number.

1330145 is a deficient number, since it is larger than the sum of its proper divisors (266035).

1330145 is an equidigital number, since it uses as much as digits as its factorization.

1330145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266034.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1330145 is about 1153.3191232265. The cubic root of 1330145 is about 109.9764412358.

Adding to 1330145 its reverse (5410331), we get a palindrome (6740476).

The spelling of 1330145 in words is "one million, three hundred thirty thousand, one hundred forty-five".