1244135534120 has 16 divisors (see below), whose sum is σ = 2799304951860. Its totient is φ = 497654213632.

The previous prime is 1244135534093. The next prime is 1244135534197. The reversal of 1244135534120 is 214355314421.

It can be written as a sum of positive squares in 2 ways, for example, as 1238310486436 + 5825047684 = 1112794^2 + 76322^2 .

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, 15551694137 + ... + 15551694216.

Almost surely, 2^{1244135534120} is an apocalyptic number.

1244135534120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244135534120 is an abundant number, since it is smaller than the sum of its proper divisors (1555169417740).

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

1244135534120 is a wasteful number, since it uses less digits than its factorization.

1244135534120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31103388364 (or 31103388360 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 1244135534120 in words is "one trillion, two hundred forty-four billion, one hundred thirty-five million, five hundred thirty-four thousand, one hundred twenty".