128204234142 has 16 divisors (see below), whose sum is σ = 261246364560. Its totient is φ = 41928428672.

The previous prime is 128204234117. The next prime is 128204234233. The reversal of 128204234142 is 241432402821.

It is a happy number.

It is a congruent number.

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, 201578667 + ... + 201579302.

It is an arithmetic number, because the mean of its divisors is an integer number (16327897785).

Almost surely, 2^128204234142 is an apocalyptic number.

128204234142 is an abundant number, since it is smaller than the sum of its proper divisors (133042130418).

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

128204234142 is a wasteful number, since it uses less digits than its factorization.

128204234142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403158027.

The product of its (nonzero) digits is 24576, while the sum is 33.

Adding to 128204234142 its reverse (241432402821), we get a palindrome (369636636963).

The spelling of 128204234142 in words is "one hundred twenty-eight billion, two hundred four million, two hundred thirty-four thousand, one hundred forty-two".