12030442 has 4 divisors (see below), whose sum is σ = 18045666. Its totient is φ = 6015220.

The previous prime is 12030437. The next prime is 12030451. The reversal of 12030442 is 24403021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24403021 = 79 ⋅308899.

It can be written as a sum of positive squares in only one way, i.e., 10883401 + 1147041 = 3299^2 + 1071^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3007609 + ... + 3007612.

Almost surely, 2^12030442 is an apocalyptic number.

12030442 is a deficient number, since it is larger than the sum of its proper divisors (6015224).

12030442 is an equidigital number, since it uses as much as digits as its factorization.

12030442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015223.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 12030442 is about 3468.4927562271. The cubic root of 12030442 is about 229.1362816501.

Adding to 12030442 its reverse (24403021), we get a palindrome (36433463).

The spelling of 12030442 in words is "twelve million, thirty thousand, four hundred forty-two".