1142111 has 12 divisors (see below), whose sum is σ = 1274112. Its totient is φ = 1020096.

The previous prime is 1142083. The next prime is 1142129. The reversal of 1142111 is 1112411.

It is not a de Polignac number, because 1142111 - 2¹⁰ = 1141087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142092 and 1142101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142131) 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 11 ways as a sum of consecutive naturals, for example, 8930 + ... + 9056.

It is an arithmetic number, because the mean of its divisors is an integer number (106176).

2^1142111 is an apocalyptic number.

1142111 is a deficient number, since it is larger than the sum of its proper divisors (132001).

1142111 is a wasteful number, since it uses less digits than its factorization.

1142111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 167 counting only the distinct ones).

The product of its digits is 8, while the sum is 11.

The square root of 1142111 is about 1068.6959343050. The cubic root of 1142111 is about 104.5288337214.

Adding to 1142111 its reverse (1112411), we get a palindrome (2254522).

The spelling of 1142111 in words is "one million, one hundred forty-two thousand, one hundred eleven".