128216124 has 36 divisors (see below), whose sum is σ = 334559680. Its totient is φ = 41359680.

The previous prime is 128216117. The next prime is 128216147. The reversal of 128216124 is 421612821.

128216124 is a `hidden beast` number, since 1 + 28 + 21 + 612 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56329 + ... + 58560.

Almost surely, 2^128216124 is an apocalyptic number.

It is an amenable number.

128216124 is an abundant number, since it is smaller than the sum of its proper divisors (206343556).

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

128216124 is a wasteful number, since it uses less digits than its factorization.

128216124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114930 (or 114925 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 128216124 is about 11323.2558921893. The cubic root of 128216124 is about 504.2519054417.

Adding to 128216124 its reverse (421612821), we get a palindrome (549828945).

The spelling of 128216124 in words is "one hundred twenty-eight million, two hundred sixteen thousand, one hundred twenty-four".