12030554 has 4 divisors (see below), whose sum is σ = 18045834. Its totient is φ = 6015276.

The previous prime is 12030547. The next prime is 12030559. The reversal of 12030554 is 45503021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11744329 + 286225 = 3427^2 + 535^2 .

It is not an unprimeable number, because it can be changed into a prime (12030559) 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, 3007637 + ... + 3007640.

Almost surely, 2^12030554 is an apocalyptic number.

12030554 is a deficient number, since it is larger than the sum of its proper divisors (6015280).

12030554 is an equidigital number, since it uses as much as digits as its factorization.

12030554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6015279.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 12030554 is about 3468.5089015310. The cubic root of 12030554 is about 229.1369927124.

Adding to 12030554 its reverse (45503021), we get a palindrome (57533575).

The spelling of 12030554 in words is "twelve million, thirty thousand, five hundred fifty-four".