1320027427 has 4 divisors (see below), whose sum is σ = 1322652240. Its totient is φ = 1317402616.

The previous prime is 1320027421. The next prime is 1320027433. The reversal of 1320027427 is 7247200231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7247200231 = 53 ⋅136739627.

It is an interprime number because it is at equal distance from previous prime (1320027421) and next prime (1320027433).

It is a cyclic number.

It is not a de Polignac number, because 1320027427 - 2¹¹ = 1320025379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320027395 and 1320027404.

It is not an unprimeable number, because it can be changed into a prime (1320027421) 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, 1311652 + ... + 1312657.

It is an arithmetic number, because the mean of its divisors is an integer number (330663060).

Almost surely, 2^1320027427 is an apocalyptic number.

1320027427 is a deficient number, since it is larger than the sum of its proper divisors (2624813).

1320027427 is an equidigital number, since it uses as much as digits as its factorization.

1320027427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624812.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 1320027427 is about 36332.1816988741. The cubic root of 1320027427 is about 1096.9689079990.

Adding to 1320027427 its reverse (7247200231), we get a palindrome (8567227658).

The spelling of 1320027427 in words is "one billion, three hundred twenty million, twenty-seven thousand, four hundred twenty-seven".