4012128 has 36 divisors (see below), whose sum is σ = 11410308. Its totient is φ = 1337280.

The previous prime is 4012111. The next prime is 4012133. The reversal of 4012128 is 8212104.

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

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 4012128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6678 + ... + 7253.

It is an arithmetic number, because the mean of its divisors is an integer number (316953).

Almost surely, 2^4012128 is an apocalyptic number.

4012128 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4012128 is an abundant number, since it is smaller than the sum of its proper divisors (7398180).

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

4012128 is a wasteful number, since it uses less digits than its factorization.

4012128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13947 (or 13936 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 4012128 is about 2003.0297052216. The cubic root of 4012128 is about 158.9003766578.

The spelling of 4012128 in words is "four million, twelve thousand, one hundred twenty-eight".