128904151242 has 16 divisors (see below), whose sum is σ = 260311296960. Its totient is φ = 42550884672.

The previous prime is 128904151231. The next prime is 128904151253. The reversal of 128904151242 is 242151409821.

128904151242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (128904151231) and next prime (128904151253).

It is a self number, because there is not a number n which added to its sum of digits gives 128904151242.

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, 104290767 + ... + 104292002.

It is an arithmetic number, because the mean of its divisors is an integer number (16269456060).

Almost surely, 2^128904151242 is an apocalyptic number.

128904151242 is an abundant number, since it is smaller than the sum of its proper divisors (131407145718).

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

128904151242 is a wasteful number, since it uses less digits than its factorization.

128904151242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208582877.

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 128904151242 in words is "one hundred twenty-eight billion, nine hundred four million, one hundred fifty-one thousand, two hundred forty-two".