1243126352 has 20 divisors (see below), whose sum is σ = 2593831380. Its totient is φ = 573750528.

The previous prime is 1243126351. The next prime is 1243126363. The reversal of 1243126352 is 2536213421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 74580496 + 1168545856 = 8636^2 + 34184^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243126351) 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, 2988077 + ... + 2988492.

It is an arithmetic number, because the mean of its divisors is an integer number (129691569).

Almost surely, 2^1243126352 is an apocalyptic number.

It is an amenable number.

1243126352 is an abundant number, since it is smaller than the sum of its proper divisors (1350705028).

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

1243126352 is a wasteful number, since it uses less digits than its factorization.

1243126352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5976590 (or 5976584 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 1243126352 is about 35257.9969935900. The cubic root of 1243126352 is about 1075.2392046023.

Adding to 1243126352 its reverse (2536213421), we get a palindrome (3779339773).

It can be divided in two parts, 12431 and 26352, that added together give a palindrome (38783).

The spelling of 1243126352 in words is "one billion, two hundred forty-three million, one hundred twenty-six thousand, three hundred fifty-two".