1320045 has 8 divisors (see below), whose sum is σ = 2112096. Its totient is φ = 704016.

The previous prime is 1320037. The next prime is 1320061. The reversal of 1320045 is 5400231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1320045 - 2³ = 1320037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 88003 = 1320045 / (1 + 3 + 2 + 0 + 0 + 4 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43987 + ... + 44016.

It is an arithmetic number, because the mean of its divisors is an integer number (264012).

2^1320045 is an apocalyptic number.

1320045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1320045 is a deficient number, since it is larger than the sum of its proper divisors (792051).

1320045 is an equidigital number, since it uses as much as digits as its factorization.

1320045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88011.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1320045 is about 1148.9321128770. The cubic root of 1320045 is about 109.6973775814.

Adding to 1320045 its reverse (5400231), we get a palindrome (6720276).

The spelling of 1320045 in words is "one million, three hundred twenty thousand, forty-five".