1142238 has 16 divisors (see below), whose sum is σ = 2304000. Its totient is φ = 377496.

The previous prime is 1142237. The next prime is 1142243. The reversal of 1142238 is 8322411.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142233) 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 in 7 ways as a sum of consecutive naturals, for example, 13 + ... + 1511.

It is an arithmetic number, because the mean of its divisors is an integer number (144000).

2^1142238 is an apocalyptic number.

1142238 is an abundant number, since it is smaller than the sum of its proper divisors (1161762).

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

1142238 is a wasteful number, since it uses less digits than its factorization.

1142238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631.

The product of its digits is 384, while the sum is 21.

The square root of 1142238 is about 1068.7553508638. The cubic root of 1142238 is about 104.5327080295.

Adding to 1142238 its reverse (8322411), we get a palindrome (9464649).

The spelling of 1142238 in words is "one million, one hundred forty-two thousand, two hundred thirty-eight".