1326120503 has 2 divisors, whose sum is σ = 1326120504. Its totient is φ = 1326120502.

The previous prime is 1326120493. The next prime is 1326120527. The reversal of 1326120503 is 3050216231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1326120503 - 2²⁸ = 1057685047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1326120533) 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, 663060251 + 663060252.

It is an arithmetic number, because the mean of its divisors is an integer number (663060252).

Almost surely, 2^1326120503 is an apocalyptic number.

1326120503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326120503 is an equidigital number, since it uses as much as digits as its factorization.

1326120503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1326120503 is about 36415.9374862161. The cubic root of 1326120503 is about 1098.6541399499.

Adding to 1326120503 its reverse (3050216231), we get a palindrome (4376336734).

The spelling of 1326120503 in words is "one billion, three hundred twenty-six million, one hundred twenty thousand, five hundred three".