1243125444 has 36 divisors (see below), whose sum is σ = 3188295152. Its totient is φ = 376704240.

The previous prime is 1243125431. The next prime is 1243125449. The reversal of 1243125444 is 4445213421.

It is not an unprimeable number, because it can be changed into a prime (1243125449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 426622 + ... + 429525.

Almost surely, 2^1243125444 is an apocalyptic number.

It is an amenable number.

1243125444 is an abundant number, since it is smaller than the sum of its proper divisors (1945169708).

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

1243125444 is a wasteful number, since it uses less digits than its factorization.

1243125444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856176 (or 856163 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 1243125444 is about 35257.9841170762. The cubic root of 1243125444 is about 1075.2389428114.

Adding to 1243125444 its reverse (4445213421), we get a palindrome (5688338865).

The spelling of 1243125444 in words is "one billion, two hundred forty-three million, one hundred twenty-five thousand, four hundred forty-four".