1320047 has 4 divisors (see below), whose sum is σ = 1323960. Its totient is φ = 1316136.

The previous prime is 1320037. The next prime is 1320061. The reversal of 1320047 is 7400231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7400231 = 53 ⋅139627.

It is a cyclic number.

It is not a de Polignac number, because 1320047 - 2⁴ = 1320031 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 (1320037) 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, 1397 + ... + 2142.

It is an arithmetic number, because the mean of its divisors is an integer number (330990).

2^1320047 is an apocalyptic number.

1320047 is a deficient number, since it is larger than the sum of its proper divisors (3913).

1320047 is an equidigital number, since it uses as much as digits as its factorization.

1320047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3912.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 1320047 is about 1148.9329832501. The cubic root of 1320047 is about 109.6974329822.

Adding to 1320047 its reverse (7400231), we get a palindrome (8720278).

The spelling of 1320047 in words is "one million, three hundred twenty thousand, forty-seven".