128123164 has 12 divisors (see below), whose sum is σ = 241462984. Its totient is φ = 59133744.

The previous prime is 128123153. The next prime is 128123167. The reversal of 128123164 is 461321821.

It is a super-3 number, since 3×128123164³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128123167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1231902 + ... + 1232005.

Almost surely, 2^128123164 is an apocalyptic number.

It is an amenable number.

128123164 is a deficient number, since it is larger than the sum of its proper divisors (113339820).

128123164 is a wasteful number, since it uses less digits than its factorization.

128123164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2463924 (or 2463922 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 128123164 is about 11319.1503214685. The cubic root of 128123164 is about 504.1300107615.

Adding to 128123164 its reverse (461321821), we get a palindrome (589444985).

The spelling of 128123164 in words is "one hundred twenty-eight million, one hundred twenty-three thousand, one hundred sixty-four".