4042340121340 has 36 divisors (see below), whose sum is σ = 9017635570776. Its totient is φ = 1521822161152.

The previous prime is 4042340121319. The next prime is 4042340121359. The reversal of 4042340121340 is 431210432404.

It is a junction number, because it is equal to n+sod(n) for n = 4042340121299 and 4042340121308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349677622 + ... + 349689181.

It is an arithmetic number, because the mean of its divisors is an integer number (250489876966).

Almost surely, 2^{4042340121340} is an apocalyptic number.

It is an amenable number.

4042340121340 is an abundant number, since it is smaller than the sum of its proper divisors (4975295449436).

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

4042340121340 is a wasteful number, since it uses less digits than its factorization.

4042340121340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699366846 (or 699366827 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 4042340121340 its reverse (431210432404), we get a palindrome (4473550553744).

The spelling of 4042340121340 in words is "four trillion, forty-two billion, three hundred forty million, one hundred twenty-one thousand, three hundred forty".