1223245 has 8 divisors (see below), whose sum is σ = 1474200. Its totient is φ = 974400.

The previous prime is 1223237. The next prime is 1223263. The reversal of 1223245 is 5423221.

It can be written as a sum of positive squares in 4 ways, for example, as 443556 + 779689 = 666^2 + 883^2 .

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

It is not a de Polignac number, because 1223245 - 2³ = 1223237 is a prime.

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, 1395 + ... + 2095.

It is an arithmetic number, because the mean of its divisors is an integer number (184275).

2^1223245 is an apocalyptic number.

It is an amenable number.

1223245 is a deficient number, since it is larger than the sum of its proper divisors (250955).

1223245 is an equidigital number, since it uses as much as digits as its factorization.

1223245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055.

The product of its digits is 480, while the sum is 19.

The square root of 1223245 is about 1106.0040687086. The cubic root of 1223245 is about 106.9476262742.

Adding to 1223245 its reverse (5423221), we get a palindrome (6646466).

The spelling of 1223245 in words is "one million, two hundred twenty-three thousand, two hundred forty-five".