1101143 has 2 divisors, whose sum is σ = 1101144. Its totient is φ = 1101142.

The previous prime is 1101127. The next prime is 1101169. The reversal of 1101143 is 3411011.

It is a weak prime.

It is an emirp because it is prime and its reverse (3411011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1101143 - 2⁴ = 1101127 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101103) by changing a digit.

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, 550571 + 550572.

It is an arithmetic number, because the mean of its divisors is an integer number (550572).

2^1101143 is an apocalyptic number.

1101143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101143 is an equidigital number, since it uses as much as digits as its factorization.

1101143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1101143 is about 1049.3536105622. The cubic root of 1101143 is about 103.2637535982.

Adding to 1101143 its reverse (3411011), we get a palindrome (4512154).

The spelling of 1101143 in words is "one million, one hundred one thousand, one hundred forty-three".