1320727247 has 8 divisors (see below), whose sum is σ = 1550197536. Its totient is φ = 1101455712.

The previous prime is 1320727237. The next prime is 1320727253. The reversal of 1320727247 is 7427270231.

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

It is not a de Polignac number, because 1320727247 - 2⁴ = 1320727231 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 (1320727237) 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, 2549408 + ... + 2549925.

It is an arithmetic number, because the mean of its divisors is an integer number (193774692).

Almost surely, 2^1320727247 is an apocalyptic number.

1320727247 is a deficient number, since it is larger than the sum of its proper divisors (229470289).

1320727247 is an equidigital number, since it uses as much as digits as its factorization.

1320727247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5099377.

The product of its (nonzero) digits is 32928, while the sum is 35.

The square root of 1320727247 is about 36341.8112784710. The cubic root of 1320727247 is about 1097.1627285066.

Adding to 1320727247 its reverse (7427270231), we get a palindrome (8747997478).

The spelling of 1320727247 in words is "one billion, three hundred twenty million, seven hundred twenty-seven thousand, two hundred forty-seven".