1244280871340 has 24 divisors (see below), whose sum is σ = 2813989048080. Its totient is φ = 459426783168.

The previous prime is 1244280871303. The next prime is 1244280871373. The reversal of 1244280871340 is 431780824421.

It is a junction number, because it is equal to n+sod(n) for n = 1244280871291 and 1244280871300.

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, 2392847570 + ... + 2392848089.

It is an arithmetic number, because the mean of its divisors is an integer number (117249543670).

Almost surely, 2^{1244280871340} is an apocalyptic number.

1244280871340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244280871340 is an abundant number, since it is smaller than the sum of its proper divisors (1569708176740).

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

1244280871340 is a wasteful number, since it uses less digits than its factorization.

1244280871340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785695681 (or 4785695679 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 44.

The spelling of 1244280871340 in words is "one trillion, two hundred forty-four billion, two hundred eighty million, eight hundred seventy-one thousand, three hundred forty".