1223342240 has 24 divisors (see below), whose sum is σ = 2890146420. Its totient is φ = 489336832.

The previous prime is 1223342233. The next prime is 1223342261. The reversal of 1223342240 is 422433221.

It can be written as a sum of positive squares in 2 ways, for example, as 1204645264 + 18696976 = 34708^2 + 4324^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3822785 + ... + 3823104.

Almost surely, 2^1223342240 is an apocalyptic number.

1223342240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223342240 is an abundant number, since it is smaller than the sum of its proper divisors (1666804180).

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

1223342240 is an equidigital number, since it uses as much as digits as its factorization.

1223342240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7645904 (or 7645896 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1223342240 is about 34976.3096967076. The cubic root of 1223342240 is about 1069.5046007867.

Adding to 1223342240 its reverse (422433221), we get a palindrome (1645775461).

The spelling of 1223342240 in words is "one billion, two hundred twenty-three million, three hundred forty-two thousand, two hundred forty".