1243133044 has 6 divisors (see below), whose sum is σ = 2175482834. Its totient is φ = 621566520.

The previous prime is 1243133027. The next prime is 1243133051. The reversal of 1243133044 is 4403313421.

It can be written as a sum of positive squares in only one way, i.e., 660490000 + 582643044 = 25700^2 + 24138^2 .

It is a super-3 number, since 3×1243133044³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 155391627 + ... + 155391634.

Almost surely, 2^1243133044 is an apocalyptic number.

It is an amenable number.

1243133044 is a deficient number, since it is larger than the sum of its proper divisors (932349790).

1243133044 is a wasteful number, since it uses less digits than its factorization.

1243133044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310783265 (or 310783263 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1243133044 is about 35258.0918939185. The cubic root of 1243133044 is about 1075.2411340087.

Adding to 1243133044 its reverse (4403313421), we get a palindrome (5646446465).

The spelling of 1243133044 in words is "one billion, two hundred forty-three million, one hundred thirty-three thousand, forty-four".