1142223 has 16 divisors (see below), whose sum is σ = 1660800. Its totient is φ = 695520.

The previous prime is 1142201. The next prime is 1142233. The reversal of 1142223 is 3222411.

It is not a de Polignac number, because 1142223 - 2⁵ = 1142191 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 1308 + ... + 1998.

It is an arithmetic number, because the mean of its divisors is an integer number (103800).

2^1142223 is an apocalyptic number.

1142223 is a deficient number, since it is larger than the sum of its proper divisors (518577).

1142223 is a wasteful number, since it uses less digits than its factorization.

1142223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742.

The product of its digits is 96, while the sum is 15.

The square root of 1142223 is about 1068.7483333320. The cubic root of 1142223 is about 104.5322504490.

Adding to 1142223 its reverse (3222411), we get a palindrome (4364634).

The spelling of 1142223 in words is "one million, one hundred forty-two thousand, two hundred twenty-three".