10421343012340 has 96 divisors (see below), whose sum is σ = 23957259661440. Its totient is φ = 3784550432256.

The previous prime is 10421343012319. The next prime is 10421343012341. The reversal of 10421343012340 is 4321034312401.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10421343012299 and 10421343012308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421343012341) 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 31 ways as a sum of consecutive naturals, for example, 10735866 + ... + 11666254.

It is an arithmetic number, because the mean of its divisors is an integer number (249554788140).

Almost surely, 2^{10421343012340} is an apocalyptic number.

10421343012340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10421343012340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11978629830720).

10421343012340 is an abundant number, since it is smaller than the sum of its proper divisors (13535916649100).

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

10421343012340 is a wasteful number, since it uses less digits than its factorization.

10421343012340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931121 (or 931119 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 10421343012340 its reverse (4321034312401), we get a palindrome (14742377324741).

The spelling of 10421343012340 in words is "ten trillion, four hundred twenty-one billion, three hundred forty-three million, twelve thousand, three hundred forty".