1320015 has 8 divisors (see below), whose sum is σ = 2112048. Its totient is φ = 704000.

The previous prime is 1319963. The next prime is 1320019. The reversal of 1320015 is 5100231.

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

It is not a de Polignac number, because 1320015 - 2⁶ = 1319951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43986 + ... + 44015.

It is an arithmetic number, because the mean of its divisors is an integer number (264006).

2^1320015 is an apocalyptic number.

1320015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1320015 is a deficient number, since it is larger than the sum of its proper divisors (792033).

1320015 is an equidigital number, since it uses as much as digits as its factorization.

1320015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88009.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 1320015 is about 1148.9190572012. The cubic root of 1320015 is about 109.6965465627.

Adding to 1320015 its reverse (5100231), we get a palindrome (6420246).

The spelling of 1320015 in words is "one million, three hundred twenty thousand, fifteen".