1101005 has 8 divisors (see below), whose sum is σ = 1399032. Its totient is φ = 828928.

The previous prime is 1100977. The next prime is 1101071. The reversal of 1101005 is 5001011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 58564 + 1042441 = 242^2 + 1021^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1101005 - 2¹⁴ = 1084621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100983 and 1101001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6392 + ... + 6561.

It is an arithmetic number, because the mean of its divisors is an integer number (174879).

2^1101005 is an apocalyptic number.

It is an amenable number.

1101005 is a deficient number, since it is larger than the sum of its proper divisors (298027).

1101005 is a wasteful number, since it uses less digits than its factorization.

1101005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12975.

The product of its (nonzero) digits is 5, while the sum is 8.

The square root of 1101005 is about 1049.2878537370. The cubic root of 1101005 is about 103.2594395980.

Adding to 1101005 its reverse (5001011), we get a palindrome (6102016).

The spelling of 1101005 in words is "one million, one hundred one thousand, five".