128008071042 has 16 divisors (see below), whose sum is σ = 256021893120. Its totient is φ = 42668398512.

The previous prime is 128008071041. The next prime is 128008071101. The reversal of 128008071042 is 240170800821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 128008070994 and 128008071012.

It is not an unprimeable number, because it can be changed into a prime (128008071041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83184 + ... + 512772.

It is an arithmetic number, because the mean of its divisors is an integer number (16001368320).

Almost surely, 2^128008071042 is an apocalyptic number.

128008071042 is an abundant number, since it is smaller than the sum of its proper divisors (128013822078).

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

128008071042 is a wasteful number, since it uses less digits than its factorization.

128008071042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479257.

The product of its (nonzero) digits is 7168, while the sum is 33.

Adding to 128008071042 its reverse (240170800821), we get a palindrome (368178871863).

The spelling of 128008071042 in words is "one hundred twenty-eight billion, eight million, seventy-one thousand, forty-two".