12042228 has 24 divisors (see below), whose sum is σ = 30653280. Its totient is φ = 3649120.

The previous prime is 12042197. The next prime is 12042241. The reversal of 12042228 is 82224021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45483 + ... + 45746.

It is an arithmetic number, because the mean of its divisors is an integer number (1277220).

Almost surely, 2^12042228 is an apocalyptic number.

It is an amenable number.

12042228 is an abundant number, since it is smaller than the sum of its proper divisors (18611052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12042228 is a wasteful number, since it uses less digits than its factorization.

12042228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91247 (or 91245 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 12042228 is about 3470.1913491910. The cubic root of 12042228 is about 229.2110840773.

Adding to 12042228 its reverse (82224021), we get a palindrome (94266249).

The spelling of 12042228 in words is "twelve million, forty-two thousand, two hundred twenty-eight".