1123005 has 24 divisors (see below), whose sum is σ = 1950048. Its totient is φ = 551616.

The previous prime is 1122997. The next prime is 1123051. The reversal of 1123005 is 5003211.

It is not a de Polignac number, because 1123005 - 2³ = 1122997 is a prime.

It is a super-2 number, since 2×1123005² = 2522280460050, which contains 22 as substring.

1123005 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2314 + ... + 2756.

It is an arithmetic number, because the mean of its divisors is an integer number (81252).

2^1123005 is an apocalyptic number.

1123005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1123005 is a deficient number, since it is larger than the sum of its proper divisors (827043).

1123005 is a wasteful number, since it uses less digits than its factorization.

1123005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 1123005 is about 1059.7193024570. The cubic root of 1123005 is about 103.9426767434.

Adding to 1123005 its reverse (5003211), we get a palindrome (6126216).

The spelling of 1123005 in words is "one million, one hundred twenty-three thousand, five".