1421340131440 has 40 divisors (see below), whose sum is σ = 3305952543888. Its totient is φ = 568306076160.

The previous prime is 1421340131329. The next prime is 1421340131467. The reversal of 1421340131440 is 441310431241.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1421340131399 and 1421340131408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3394306 + ... + 3789985.

Almost surely, 2^{1421340131440} is an apocalyptic number.

1421340131440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421340131440 is an abundant number, since it is smaller than the sum of its proper divisors (1884612412448).

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

1421340131440 is a wasteful number, since it uses less digits than its factorization.

1421340131440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7186777 (or 7186771 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1421340131440 its reverse (441310431241), we get a palindrome (1862650562681).

The spelling of 1421340131440 in words is "one trillion, four hundred twenty-one billion, three hundred forty million, one hundred thirty-one thousand, four hundred forty".