102128 has 20 divisors (see below), whose sum is σ = 213528. Its totient is φ = 47040.

The previous prime is 102121. The next prime is 102139. The reversal of 102128 is 821201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121) by changing a digit.

102128 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38 + ... + 453.

2¹⁰²¹²⁸ is an apocalyptic number.

It is an amenable number.

102128 is an abundant number, since it is smaller than the sum of its proper divisors (111400).

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

102128 is a wasteful number, since it uses less digits than its factorization.

102128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 102128 is about 319.5747173980. The cubic root of 102128 is about 46.7428234954.

Adding to 102128 its reverse (821201), we get a palindrome (923329).

The spelling of 102128 in words is "one hundred two thousand, one hundred twenty-eight".