1123081 has 2 divisors, whose sum is σ = 1123082. Its totient is φ = 1123080.

The previous prime is 1123079. The next prime is 1123093. The reversal of 1123081 is 1803211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1121481 + 1600 = 1059^2 + 40^2 .

It is an emirp because it is prime and its reverse (1803211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123081 - 2¹ = 1123079 is a prime.

It is a super-2 number, since 2×1123081² = 2522621865122, which contains 22 as substring.

Together with 1123079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1123051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561540 + 561541.

It is an arithmetic number, because the mean of its divisors is an integer number (561541).

2^1123081 is an apocalyptic number.

It is an amenable number.

1123081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123081 is an equidigital number, since it uses as much as digits as its factorization.

1123081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1123081 is about 1059.7551604026. The cubic root of 1123081 is about 103.9450214837.

Adding to 1123081 its reverse (1803211), we get a palindrome (2926292).

It can be divided in two parts, 11230 and 81, that added together give a palindrome (11311).

The spelling of 1123081 in words is "one million, one hundred twenty-three thousand, eighty-one".