1123845 has 8 divisors (see below), whose sum is σ = 1798176. Its totient is φ = 599376.

The previous prime is 1123841. The next prime is 1123867. The reversal of 1123845 is 5483211.

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

It is not a de Polignac number, because 1123845 - 2² = 1123841 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37447 + ... + 37476.

It is an arithmetic number, because the mean of its divisors is an integer number (224772).

2^1123845 is an apocalyptic number.

1123845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1123845 is a deficient number, since it is larger than the sum of its proper divisors (674331).

1123845 is an equidigital number, since it uses as much as digits as its factorization.

1123845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74931.

The product of its digits is 960, while the sum is 24.

The square root of 1123845 is about 1060.1155597387. The cubic root of 1123845 is about 103.9685864197.

The spelling of 1123845 in words is "one million, one hundred twenty-three thousand, eight hundred forty-five".