1244796975421 has 8 divisors (see below), whose sum is σ = 1298933285760. Its totient is φ = 1190661890352.

The previous prime is 1244796975403. The next prime is 1244796975437. The reversal of 1244796975421 is 1245796974421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1244796975421 - 2¹¹ = 1244796973373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1244796975421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244796970421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2209440 + ... + 2714998.

It is an arithmetic number, because the mean of its divisors is an integer number (162366660720).

Almost surely, 2^{1244796975421} is an apocalyptic number.

It is an amenable number.

1244796975421 is a deficient number, since it is larger than the sum of its proper divisors (54136310339).

1244796975421 is a wasteful number, since it uses less digits than its factorization.

1244796975421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612635.

The product of its digits is 30481920, while the sum is 61.

The spelling of 1244796975421 in words is "one trillion, two hundred forty-four billion, seven hundred ninety-six million, nine hundred seventy-five thousand, four hundred twenty-one".