1113405 has 16 divisors (see below), whose sum is σ = 1795200. Its totient is φ = 589248.

The previous prime is 1113403. The next prime is 1113421. The reversal of 1113405 is 5043111.

It is not a de Polignac number, because 1113405 - 2¹ = 1113403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113401) 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 15 ways as a sum of consecutive naturals, for example, 2799 + ... + 3171.

It is an arithmetic number, because the mean of its divisors is an integer number (112200).

2^1113405 is an apocalyptic number.

1113405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1113405 is a deficient number, since it is larger than the sum of its proper divisors (681795).

1113405 is a wasteful number, since it uses less digits than its factorization.

1113405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1113405 is about 1055.1800794177. The cubic root of 1113405 is about 103.6456443324.

Adding to 1113405 its reverse (5043111), we get a palindrome (6156516).

The spelling of 1113405 in words is "one million, one hundred thirteen thousand, four hundred five".