1111005 has 24 divisors (see below), whose sum is σ = 2201472. Its totient is φ = 507744.

The previous prime is 1110997. The next prime is 1111007. The reversal of 1111005 is 5001111.

It is not a de Polignac number, because 1111005 - 2³ = 1110997 is a prime.

It is a super-2 number, since 2×1111005² = 2468664220050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

1111005 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1449 + ... + 2078.

It is an arithmetic number, because the mean of its divisors is an integer number (91728).

2^1111005 is an apocalyptic number.

1111005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1111005 is a deficient number, since it is larger than the sum of its proper divisors (1090467).

1111005 is a wasteful number, since it uses less digits than its factorization.

1111005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3545 (or 3542 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 9.

The square root of 1111005 is about 1054.0422192683. The cubic root of 1111005 is about 103.5711196412.

Adding to 1111005 its reverse (5001111), we get a palindrome (6112116).

The spelling of 1111005 in words is "one million, one hundred eleven thousand, five".