1244132128452 has 48 divisors (see below), whose sum is σ = 2956948243200. Its totient is φ = 407022957600.

The previous prime is 1244132128429. The next prime is 1244132128453. The reversal of 1244132128452 is 2548212314421.

It is a self number, because there is not a number n which added to its sum of digits gives 1244132128452.

It is not an unprimeable number, because it can be changed into a prime (1244132128453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 981174 + ... + 1857677.

It is an arithmetic number, because the mean of its divisors is an integer number (61603088400).

Almost surely, 2^{1244132128452} is an apocalyptic number.

1244132128452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1244132128452 is an abundant number, since it is smaller than the sum of its proper divisors (1712816114748).

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

1244132128452 is a wasteful number, since it uses less digits than its factorization.

1244132128452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839536 (or 2839534 counting only the distinct ones).

The product of its digits is 122880, while the sum is 39.

The spelling of 1244132128452 in words is "one trillion, two hundred forty-four billion, one hundred thirty-two million, one hundred twenty-eight thousand, four hundred fifty-two".