1243040124 has 24 divisors (see below), whose sum is σ = 2911719888. Its totient is φ = 412733440.

The previous prime is 1243040081. The next prime is 1243040147. The reversal of 1243040124 is 4210403421.

It is a self number, because there is not a number n which added to its sum of digits gives 1243040124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198447 + ... + 204614.

It is an arithmetic number, because the mean of its divisors is an integer number (121321662).

Almost surely, 2^1243040124 is an apocalyptic number.

It is an amenable number.

1243040124 is an abundant number, since it is smaller than the sum of its proper divisors (1668679764).

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

1243040124 is a wasteful number, since it uses less digits than its factorization.

1243040124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403325 (or 403323 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1243040124 is about 35256.7741575998. The cubic root of 1243040124 is about 1075.2143431257.

Adding to 1243040124 its reverse (4210403421), we get a palindrome (5453443545).

The spelling of 1243040124 in words is "one billion, two hundred forty-three million, forty thousand, one hundred twenty-four".