11778123 has 8 divisors (see below), whose sum is σ = 17947648. Its totient is φ = 6730344.

The previous prime is 11778121. The next prime is 11778149. The reversal of 11778123 is 32187711.

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

It is not a de Polignac number, because 11778123 - 2¹ = 11778121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11778121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280411 + ... + 280452.

It is an arithmetic number, because the mean of its divisors is an integer number (2243456).

Almost surely, 2^11778123 is an apocalyptic number.

11778123 is a deficient number, since it is larger than the sum of its proper divisors (6169525).

11778123 is an equidigital number, since it uses as much as digits as its factorization.

11778123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560873.

The product of its digits is 2352, while the sum is 30.

The square root of 11778123 is about 3431.9270097133. The cubic root of 11778123 is about 227.5230295086.

The spelling of 11778123 in words is "eleven million, seven hundred seventy-eight thousand, one hundred twenty-three".