1223146 has 8 divisors (see below), whose sum is σ = 1884420. Its totient is φ = 595008.

The previous prime is 1223119. The next prime is 1223149. The reversal of 1223146 is 6413221.

It can be written as a sum of positive squares in 2 ways, for example, as 978121 + 245025 = 989^2 + 495^2 .

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

It is a super-2 number, since 2×1223146² = 2992172274632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1223149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8191 + ... + 8338.

2^1223146 is an apocalyptic number.

1223146 is a deficient number, since it is larger than the sum of its proper divisors (661274).

1223146 is a wasteful number, since it uses less digits than its factorization.

1223146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16568.

The product of its digits is 288, while the sum is 19.

The square root of 1223146 is about 1105.9593120906. The cubic root of 1223146 is about 106.9447410248.

Adding to 1223146 its reverse (6413221), we get a palindrome (7636367).

It can be divided in two parts, 1223 and 146, that added together give a square (1369 = 37²).

The spelling of 1223146 in words is "one million, two hundred twenty-three thousand, one hundred forty-six".