1242228 has 24 divisors (see below), whose sum is σ = 3121888. Its totient is φ = 382176.

The previous prime is 1242221. The next prime is 1242233. The reversal of 1242228 is 8222421.

It is a happy number.

1242228 is nontrivially palindromic in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3826 + ... + 4137.

2^1242228 is an apocalyptic number.

It is an amenable number.

1242228 is an abundant number, since it is smaller than the sum of its proper divisors (1879660).

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

1242228 is a wasteful number, since it uses less digits than its factorization.

1242228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7983 (or 7981 counting only the distinct ones).

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

The square root of 1242228 is about 1114.5528251276. The cubic root of 1242228 is about 107.4980133038.

Adding to 1242228 its reverse (8222421), we get a palindrome (9464649).

The spelling of 1242228 in words is "one million, two hundred forty-two thousand, two hundred twenty-eight".