1320412447 has 2 divisors, whose sum is σ = 1320412448. Its totient is φ = 1320412446.

The previous prime is 1320412417. The next prime is 1320412453. The reversal of 1320412447 is 7442140231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320412447 - 2⁷ = 1320412319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320412417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660206223 + 660206224.

It is an arithmetic number, because the mean of its divisors is an integer number (660206224).

Almost surely, 2^1320412447 is an apocalyptic number.

1320412447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320412447 is an equidigital number, since it uses as much as digits as its factorization.

1320412447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 1320412447 is about 36337.4799208751. The cubic root of 1320412447 is about 1097.0755507105.

Adding to 1320412447 its reverse (7442140231), we get a palindrome (8762552678).

It can be divided in two parts, 13204 and 12447, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 1320412447 in words is "one billion, three hundred twenty million, four hundred twelve thousand, four hundred forty-seven".