1320434123 has 2 divisors, whose sum is σ = 1320434124. Its totient is φ = 1320434122.

The previous prime is 1320434111. The next prime is 1320434161. The reversal of 1320434123 is 3214340231.

It is a weak prime.

It is an emirp because it is prime and its reverse (3214340231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1320434123 - 2¹⁰ = 1320433099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320434173) 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, 660217061 + 660217062.

It is an arithmetic number, because the mean of its divisors is an integer number (660217062).

Almost surely, 2^1320434123 is an apocalyptic number.

1320434123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320434123 is an equidigital number, since it uses as much as digits as its factorization.

1320434123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1320434123 is about 36337.7781791898. The cubic root of 1320434123 is about 1097.0815539053.

Adding to 1320434123 its reverse (3214340231), we get a palindrome (4534774354).

The spelling of 1320434123 in words is "one billion, three hundred twenty million, four hundred thirty-four thousand, one hundred twenty-three".