1131224042440 has 32 divisors (see below), whose sum is σ = 2550120785280. Its totient is φ = 451624427712.

The previous prime is 1131224042401. The next prime is 1131224042449. The reversal of 1131224042440 is 442404221311.

It is a junction number, because it is equal to n+sod(n) for n = 1131224042399 and 1131224042408.

It is not an unprimeable number, because it can be changed into a prime (1131224042449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27015984 + ... + 27057823.

It is an arithmetic number, because the mean of its divisors is an integer number (79691274540).

Almost surely, 2^{1131224042440} is an apocalyptic number.

1131224042440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131224042440 is an abundant number, since it is smaller than the sum of its proper divisors (1418896742840).

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

1131224042440 is a wasteful number, since it uses less digits than its factorization.

1131224042440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54074341 (or 54074337 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1131224042440 its reverse (442404221311), we get a palindrome (1573628263751).

The spelling of 1131224042440 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-four million, forty-two thousand, four hundred forty".