1243133144 has 16 divisors (see below), whose sum is σ = 2542772520. Its totient is φ = 565060480.

The previous prime is 1243133131. The next prime is 1243133147. The reversal of 1243133144 is 4413313421.

It is a happy number.

It is a super-3 number, since 3×1243133144³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243133147) by changing a digit.

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, 7063169 + ... + 7063344.

Almost surely, 2^1243133144 is an apocalyptic number.

It is an amenable number.

1243133144 is an abundant number, since it is smaller than the sum of its proper divisors (1299639376).

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

1243133144 is a wasteful number, since it uses less digits than its factorization.

1243133144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14126530 (or 14126526 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 1243133144 is about 35258.0933120326. The cubic root of 1243133144 is about 1075.2411628402.

Adding to 1243133144 its reverse (4413313421), we get a palindrome (5656446565).

The spelling of 1243133144 in words is "one billion, two hundred forty-three million, one hundred thirty-three thousand, one hundred forty-four".