1116405 has 12 divisors (see below), whose sum is σ = 1935180. Its totient is φ = 595392.

The previous prime is 1116371. The next prime is 1116419. The reversal of 1116405 is 5046111.

It can be written as a sum of positive squares in 2 ways, for example, as 715716 + 400689 = 846^2 + 633^2 .

It is not a de Polignac number, because 1116405 - 2⁷ = 1116277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12360 + ... + 12449.

It is an arithmetic number, because the mean of its divisors is an integer number (161265).

2^1116405 is an apocalyptic number.

1116405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1116405 is a deficient number, since it is larger than the sum of its proper divisors (818775).

1116405 is a wasteful number, since it uses less digits than its factorization.

1116405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24820 (or 24817 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1116405 is about 1056.6006814308. The cubic root of 1116405 is about 103.7386497478.

It can be divided in two parts, 1116 and 405, that added together give a square (1521 = 39²).

The spelling of 1116405 in words is "one million, one hundred sixteen thousand, four hundred five".