1320600145 has 4 divisors (see below), whose sum is σ = 1584720180. Its totient is φ = 1056480112.

The previous prime is 1320600143. The next prime is 1320600191. The reversal of 1320600145 is 5410060231.

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 799984656 + 520615489 = 28284^2 + 22817^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320600145 - 2¹ = 1320600143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320600143) 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, 132060010 + ... + 132060019.

It is an arithmetic number, because the mean of its divisors is an integer number (396180045).

Almost surely, 2^1320600145 is an apocalyptic number.

It is an amenable number.

1320600145 is a deficient number, since it is larger than the sum of its proper divisors (264120035).

1320600145 is an equidigital number, since it uses as much as digits as its factorization.

1320600145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264120034.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1320600145 is about 36340.0625343436. The cubic root of 1320600145 is about 1097.1275317236.

Adding to 1320600145 its reverse (5410060231), we get a palindrome (6730660376).

The spelling of 1320600145 in words is "one billion, three hundred twenty million, six hundred thousand, one hundred forty-five".