1131040242440 has 32 divisors (see below), whose sum is σ = 2555953407000. Its totient is φ = 450440477184.

The previous prime is 1131040242403. The next prime is 1131040242461. The reversal of 1131040242440 is 442420401311.

It can be written as a sum of positive squares in 4 ways, for example, as 1114430703556 + 16609538884 = 1055666^2 + 128878^2 .

It is an unprimeable number.

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, 61728845 + ... + 61747164.

Almost surely, 2^{1131040242440} is an apocalyptic number.

1131040242440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131040242440 is an abundant number, since it is smaller than the sum of its proper divisors (1424913164560).

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

1131040242440 is a wasteful number, since it uses less digits than its factorization.

1131040242440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123476249 (or 123476245 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 1131040242440 its reverse (442420401311), we get a palindrome (1573460643751).

The spelling of 1131040242440 in words is "one trillion, one hundred thirty-one billion, forty million, two hundred forty-two thousand, four hundred forty".