1123445 has 8 divisors (see below), whose sum is σ = 1427544. Its totient is φ = 845824.

The previous prime is 1123439. The next prime is 1123477. The reversal of 1123445 is 5443211.

It can be written as a sum of positive squares in 4 ways, for example, as 188356 + 935089 = 434^2 + 967^2 .

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 1123445 - 2⁴ = 1123429 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

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, 6524 + ... + 6693.

It is an arithmetic number, because the mean of its divisors is an integer number (178443).

2^1123445 is an apocalyptic number.

It is an amenable number.

1123445 is a deficient number, since it is larger than the sum of its proper divisors (304099).

1123445 is a wasteful number, since it uses less digits than its factorization.

1123445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13239.

The product of its digits is 480, while the sum is 20.

The square root of 1123445 is about 1059.9268842708. The cubic root of 1123445 is about 103.9562500893.

Adding to 1123445 its reverse (5443211), we get a palindrome (6566656).

The spelling of 1123445 in words is "one million, one hundred twenty-three thousand, four hundred forty-five".