1320415 has 4 divisors (see below), whose sum is σ = 1584504. Its totient is φ = 1056328.

The previous prime is 1320413. The next prime is 1320421. The reversal of 1320415 is 5140231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5140231 = 1913 ⋅2687.

It is a cyclic number.

It is not a de Polignac number, because 1320415 - 2¹ = 1320413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320413) 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, 132037 + ... + 132046.

It is an arithmetic number, because the mean of its divisors is an integer number (396126).

2^1320415 is an apocalyptic number.

1320415 is a deficient number, since it is larger than the sum of its proper divisors (264089).

1320415 is an equidigital number, since it uses as much as digits as its factorization.

1320415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264088.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1320415 is about 1149.0931206826. The cubic root of 1320415 is about 109.7076257770.

Adding to 1320415 its reverse (5140231), we get a palindrome (6460646).

The spelling of 1320415 in words is "one million, three hundred twenty thousand, four hundred fifteen".