1121143 has 2 divisors, whose sum is σ = 1121144. Its totient is φ = 1121142.

The previous prime is 1121101. The next prime is 1121147. The reversal of 1121143 is 3411211.

It is a strong prime.

It is an emirp because it is prime and its reverse (3411211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560571 + 560572.

It is an arithmetic number, because the mean of its divisors is an integer number (560572).

2^1121143 is an apocalyptic number.

1121143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121143 is an equidigital number, since it uses as much as digits as its factorization.

1121143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24, while the sum is 13.

The square root of 1121143 is about 1058.8404034603. The cubic root of 1121143 is about 103.8851975307.

Adding to 1121143 its reverse (3411211), we get a palindrome (4532354).

The spelling of 1121143 in words is "one million, one hundred twenty-one thousand, one hundred forty-three".