1123604 has 12 divisors (see below), whose sum is σ = 1975764. Its totient is φ = 559104.

The previous prime is 1123601. The next prime is 1123621. The reversal of 1123604 is 4063211.

It can be written as a sum of positive squares in 2 ways, for example, as 1106704 + 16900 = 1052^2 + 130^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123601) 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 3 ways as a sum of consecutive naturals, for example, 482 + ... + 1574.

It is an arithmetic number, because the mean of its divisors is an integer number (164647).

2^1123604 is an apocalyptic number.

It is an amenable number.

1123604 is a deficient number, since it is larger than the sum of its proper divisors (852160).

1123604 is a wasteful number, since it uses less digits than its factorization.

1123604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354 (or 1352 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1123604 is about 1060.0018867908. The cubic root of 1123604 is about 103.9611541312.

Adding to 1123604 its reverse (4063211), we get a palindrome (5186815).

The spelling of 1123604 in words is "one million, one hundred twenty-three thousand, six hundred four".