128320102 has 16 divisors (see below), whose sum is σ = 197435232. Its totient is φ = 62524800.

The previous prime is 128320079. The next prime is 128320109. The reversal of 128320102 is 201023821.

It is a self number, because there is not a number n which added to its sum of digits gives 128320102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128320109) 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, 11998 + ... + 20014.

It is an arithmetic number, because the mean of its divisors is an integer number (12339702).

Almost surely, 2^128320102 is an apocalyptic number.

128320102 is a deficient number, since it is larger than the sum of its proper divisors (69115130).

128320102 is a wasteful number, since it uses less digits than its factorization.

128320102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8223.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 128320102 is about 11327.8463089857. The cubic root of 128320102 is about 504.3881777924.

Adding to 128320102 its reverse (201023821), we get a palindrome (329343923).

The spelling of 128320102 in words is "one hundred twenty-eight million, three hundred twenty thousand, one hundred two".