1296004123 has 2 divisors, whose sum is σ = 1296004124. Its totient is φ = 1296004122.

The previous prime is 1296004121. The next prime is 1296004141. The reversal of 1296004123 is 3214006921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1296004123 - 2¹ = 1296004121 is a prime.

It is a super-3 number, since 3×1296004123³ (a number of 28 digits) contains 333 as substring.

Together with 1296004121, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1296004091 and 1296004100.

It is not a weakly prime, because it can be changed into another prime (1296004121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648002061 + 648002062.

It is an arithmetic number, because the mean of its divisors is an integer number (648002062).

Almost surely, 2^1296004123 is an apocalyptic number.

1296004123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296004123 is an equidigital number, since it uses as much as digits as its factorization.

1296004123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1296004123 is about 36000.0572638433. The cubic root of 1296004123 is about 1090.2735118691.

The spelling of 1296004123 in words is "one billion, two hundred ninety-six million, four thousand, one hundred twenty-three".