1123205 has 8 divisors (see below), whose sum is σ = 1406592. Its totient is φ = 859408.

The previous prime is 1123189. The next prime is 1123211. The reversal of 1123205 is 5023211.

It is a happy number.

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 1123205 - 2⁴ = 1123189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123205.

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, 4769 + ... + 4998.

It is an arithmetic number, because the mean of its divisors is an integer number (175824).

2^1123205 is an apocalyptic number.

It is an amenable number.

1123205 is a deficient number, since it is larger than the sum of its proper divisors (283387).

1123205 is an equidigital number, since it uses as much as digits as its factorization.

1123205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9795.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1123205 is about 1059.8136628672. The cubic root of 1123205 is about 103.9488468855.

Adding to 1123205 its reverse (5023211), we get a palindrome (6146416).

It can be divided in two parts, 11 and 23205, that multiplied together give a triangular number (255255 = T₇₁₄).

The spelling of 1123205 in words is "one million, one hundred twenty-three thousand, two hundred five".