1140423021440 has 64 divisors (see below), whose sum is σ = 2730499860960. Its totient is φ = 455470467072.

The previous prime is 1140423021403. The next prime is 1140423021461. The reversal of 1140423021440 is 441203240411.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946484 + ... + 1782323.

Almost surely, 2^{1140423021440} is an apocalyptic number.

1140423021440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140423021440 is an abundant number, since it is smaller than the sum of its proper divisors (1590076839520).

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

1140423021440 is an equidigital number, since it uses as much as digits as its factorization.

1140423021440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729479 (or 2729467 counting only the distinct ones).

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

Adding to 1140423021440 its reverse (441203240411), we get a palindrome (1581626261851).

The spelling of 1140423021440 in words is "one trillion, one hundred forty billion, four hundred twenty-three million, twenty-one thousand, four hundred forty".