12128054 has 4 divisors (see below), whose sum is σ = 18192084. Its totient is φ = 6064026.

The previous prime is 12128027. The next prime is 12128059. The reversal of 12128054 is 45082121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45082121 = 7 ⋅6440303.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12128059) 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 as a sum of consecutive naturals, namely, 3032012 + ... + 3032015.

It is an arithmetic number, because the mean of its divisors is an integer number (4548021).

Almost surely, 2^12128054 is an apocalyptic number.

12128054 is a deficient number, since it is larger than the sum of its proper divisors (6064030).

12128054 is an equidigital number, since it uses as much as digits as its factorization.

12128054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6064029.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 12128054 is about 3482.5355705290. The cubic root of 12128054 is about 229.7543312613.

The spelling of 12128054 in words is "twelve million, one hundred twenty-eight thousand, fifty-four".