128200420062 has 256 divisors, whose sum is σ = 340787865600. Its totient is φ = 35213460480.

The previous prime is 128200420039. The next prime is 128200420079. The reversal of 128200420062 is 260024002821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 114771528 + ... + 114772644.

It is an arithmetic number, because the mean of its divisors is an integer number (1331202600).

Almost surely, 2^128200420062 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128200420062, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170393932800).

128200420062 is an abundant number, since it is smaller than the sum of its proper divisors (212587445538).

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

128200420062 is a wasteful number, since it uses less digits than its factorization.

128200420062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 128200420062 its reverse (260024002821), we get a palindrome (388224422883).

The spelling of 128200420062 in words is "one hundred twenty-eight billion, two hundred million, four hundred twenty thousand, sixty-two".