3420421334240 has 24 divisors (see below), whose sum is σ = 8080745402520. Its totient is φ = 1368168533632.

The previous prime is 3420421334147. The next prime is 3420421334249. The reversal of 3420421334240 is 424331240243.

3420421334240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 3420421334197 and 3420421334206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420421334249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10688816510 + ... + 10688816829.

It is an arithmetic number, because the mean of its divisors is an integer number (336697725105).

Almost surely, 2^{3420421334240} is an apocalyptic number.

It is an amenable number.

3420421334240 is an abundant number, since it is smaller than the sum of its proper divisors (4660324068280).

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

3420421334240 is a wasteful number, since it uses less digits than its factorization.

3420421334240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21377633354 (or 21377633346 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 3420421334240 its reverse (424331240243), we get a palindrome (3844752574483).

The spelling of 3420421334240 in words is "three trillion, four hundred twenty billion, four hundred twenty-one million, three hundred thirty-four thousand, two hundred forty".