1320020423 has 2 divisors, whose sum is σ = 1320020424. Its totient is φ = 1320020422.

The previous prime is 1320020417. The next prime is 1320020467. The reversal of 1320020423 is 3240200231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320020423 - 2⁸ = 1320020167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320020413) 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, 660010211 + 660010212.

It is an arithmetic number, because the mean of its divisors is an integer number (660010212).

Almost surely, 2^1320020423 is an apocalyptic number.

1320020423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320020423 is an equidigital number, since it uses as much as digits as its factorization.

1320020423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1320020423 is about 36332.0853103700. The cubic root of 1320020423 is about 1096.9669678414.

Adding to 1320020423 its reverse (3240200231), we get a palindrome (4560220654).

The spelling of 1320020423 in words is "one billion, three hundred twenty million, twenty thousand, four hundred twenty-three".