84120420421284 has 24 divisors (see below), whose sum is σ = 211379517982080. Its totient is φ = 25883206283424.

The previous prime is 84120420421223. The next prime is 84120420421307. The reversal of 84120420421284 is 48212402402148.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269616731964 + ... + 269616732275.

It is an arithmetic number, because the mean of its divisors is an integer number (8807479915920).

Almost surely, 2^{84120420421284} is an apocalyptic number.

It is an amenable number.

84120420421284 is an abundant number, since it is smaller than the sum of its proper divisors (127259097560796).

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

84120420421284 is a wasteful number, since it uses less digits than its factorization.

84120420421284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539233464259 (or 539233464257 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 42.

The spelling of 84120420421284 in words is "eighty-four trillion, one hundred twenty billion, four hundred twenty million, four hundred twenty-one thousand, two hundred eighty-four".