1320412243 has 2 divisors, whose sum is σ = 1320412244. Its totient is φ = 1320412242.

The previous prime is 1320412211. The next prime is 1320412279. The reversal of 1320412243 is 3422140231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320412243 - 2⁵ = 1320412211 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320412043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660206121 + 660206122.

It is an arithmetic number, because the mean of its divisors is an integer number (660206122).

Almost surely, 2^1320412243 is an apocalyptic number.

1320412243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320412243 is an equidigital number, since it uses as much as digits as its factorization.

1320412243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1320412243 is about 36337.4771138559. The cubic root of 1320412243 is about 1097.0754942121.

Adding to 1320412243 its reverse (3422140231), we get a palindrome (4742552474).

The spelling of 1320412243 in words is "one billion, three hundred twenty million, four hundred twelve thousand, two hundred forty-three".