128002 has 16 divisors (see below), whose sum is σ = 225792. Its totient is φ = 53280.

The previous prime is 127997. The next prime is 128021. The reversal of 128002 is 200821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463 + ... + 685.

It is an arithmetic number, because the mean of its divisors is an integer number (14112).

2¹²⁸⁰⁰² is an apocalyptic number.

128002 is a deficient number, since it is larger than the sum of its proper divisors (97790).

128002 is a wasteful number, since it uses less digits than its factorization.

128002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 128002 is about 357.7736714740. The cubic root of 128002 is about 50.3971044780.

Adding to 128002 its reverse (200821), we get a palindrome (328823).

It can be divided in two parts, 12800 and 2, that multiplied together give a square (25600 = 160²).

The spelling of 128002 in words is "one hundred twenty-eight thousand, two".