1243256 has 24 divisors (see below), whose sum is σ = 2682120. Its totient is φ = 529248.

The previous prime is 1243211. The next prime is 1243271. The reversal of 1243256 is 6523421.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 8270 + ... + 8418.

It is an arithmetic number, because the mean of its divisors is an integer number (111755).

2^1243256 is an apocalyptic number.

It is an amenable number.

1243256 is an abundant number, since it is smaller than the sum of its proper divisors (1438864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243256 is an equidigital number, since it uses as much as digits as its factorization.

1243256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 158 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 1243256 is about 1115.0139012586. The cubic root of 1243256 is about 107.5276582880.

Adding to 1243256 its reverse (6523421), we get a palindrome (7766677).

The spelling of 1243256 in words is "one million, two hundred forty-three thousand, two hundred fifty-six".