1251042031144 has 16 divisors (see below), whose sum is σ = 2345807135700. Its totient is φ = 625493461632.

The previous prime is 1251042031097. The next prime is 1251042031199. The reversal of 1251042031144 is 4411302401521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 990801252100 + 260240779044 = 995390^2 + 510138^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3250639 + ... + 3615070.

Almost surely, 2^{1251042031144} is an apocalyptic number.

It is an amenable number.

1251042031144 is a deficient number, since it is larger than the sum of its proper divisors (1094765104556).

1251042031144 is a wasteful number, since it uses less digits than its factorization.

1251042031144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6888492 (or 6888488 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 1251042031144 its reverse (4411302401521), we get a palindrome (5662344432665).

The spelling of 1251042031144 in words is "one trillion, two hundred fifty-one billion, forty-two million, thirty-one thousand, one hundred forty-four".