1001123 has 2 divisors, whose sum is σ = 1001124. Its totient is φ = 1001122.

The previous prime is 1001107. The next prime is 1001153. The reversal of 1001123 is 3211001.

It is a weak prime.

It is an emirp because it is prime and its reverse (3211001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001123 - 2⁴ = 1001107 is a prime.

It is a super-2 number, since 2×1001123² = 2004494522258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1001123.

It is not a weakly prime, because it can be changed into another prime (1001153) 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, 500561 + 500562.

It is an arithmetic number, because the mean of its divisors is an integer number (500562).

2^1001123 is an apocalyptic number.

1001123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001123 is an equidigital number, since it uses as much as digits as its factorization.

1001123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1001123 is about 1000.5613424473. The cubic root of 1001123 is about 100.0374193295.

Adding to 1001123 its reverse (3211001), we get a palindrome (4212124).

The spelling of 1001123 in words is "one million, one thousand, one hundred twenty-three".