128542122240 has 288 divisors, whose sum is σ = 480094196736. Its totient is φ = 28697518080.

The previous prime is 128542122239. The next prime is 128542122277. The reversal of 128542122240 is 42221245821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1100235 + ... + 1211445.

Almost surely, 2^128542122240 is an apocalyptic number.

128542122240 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 128542122240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240047098368).

128542122240 is an abundant number, since it is smaller than the sum of its proper divisors (351552074496).

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

128542122240 is a wasteful number, since it uses less digits than its factorization.

128542122240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111285 (or 111271 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

The spelling of 128542122240 in words is "one hundred twenty-eight billion, five hundred forty-two million, one hundred twenty-two thousand, two hundred forty".