1021341432440 has 64 divisors (see below), whose sum is σ = 2626759618560. Its totient is φ = 350113795200.

The previous prime is 1021341432373. The next prime is 1021341432443. The reversal of 1021341432440 is 442341431201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021341432443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1326569 + ... + 1949991.

It is an arithmetic number, because the mean of its divisors is an integer number (41043119040).

Almost surely, 2^{1021341432440} is an apocalyptic number.

1021341432440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021341432440 is an abundant number, since it is smaller than the sum of its proper divisors (1605418186120).

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

1021341432440 is a wasteful number, since it uses less digits than its factorization.

1021341432440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629292 (or 629288 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 1021341432440 its reverse (442341431201), we get a palindrome (1463682863641).

The spelling of 1021341432440 in words is "one trillion, twenty-one billion, three hundred forty-one million, four hundred thirty-two thousand, four hundred forty".