1142228 has 6 divisors (see below), whose sum is σ = 1998906. Its totient is φ = 571112.

The previous prime is 1142201. The next prime is 1142233. The reversal of 1142228 is 8222411.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 620944 + 521284 = 788^2 + 722^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 142775 + ... + 142782.

It is an arithmetic number, because the mean of its divisors is an integer number (333151).

2^1142228 is an apocalyptic number.

It is an amenable number.

1142228 is a deficient number, since it is larger than the sum of its proper divisors (856678).

1142228 is a wasteful number, since it uses less digits than its factorization.

1142228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285561 (or 285559 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 1142228 is about 1068.7506725144. The cubic root of 1142228 is about 104.5324029763.

Adding to 1142228 its reverse (8222411), we get a palindrome (9364639).

The spelling of 1142228 in words is "one million, one hundred forty-two thousand, two hundred twenty-eight".