1296044123 has 8 divisors (see below), whose sum is σ = 1446747456. Its totient is φ = 1150821000.

The previous prime is 1296044107. The next prime is 1296044149. The reversal of 1296044123 is 3214406921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1296044123 - 2⁴ = 1296044107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1296044123.

It is not an unprimeable number, because it can be changed into a prime (1296004123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1369553 + ... + 1370498.

It is an arithmetic number, because the mean of its divisors is an integer number (180843432).

Almost surely, 2^1296044123 is an apocalyptic number.

1296044123 is a deficient number, since it is larger than the sum of its proper divisors (150703333).

1296044123 is a wasteful number, since it uses less digits than its factorization.

1296044123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740105.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1296044123 is about 36000.6128142286. The cubic root of 1296044123 is about 1090.2847285237.

The spelling of 1296044123 in words is "one billion, two hundred ninety-six million, forty-four thousand, one hundred twenty-three".