4128140 has 12 divisors (see below), whose sum is σ = 8669136. Its totient is φ = 1651248.

The previous prime is 4128139. The next prime is 4128181. The reversal of 4128140 is 418214.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 206407 = 4128140 / (4 + 1 + 2 + 8 + 1 + 4 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103184 + ... + 103223.

It is an arithmetic number, because the mean of its divisors is an integer number (722428).

Almost surely, 2^4128140 is an apocalyptic number.

It is an amenable number.

4128140 is an abundant number, since it is smaller than the sum of its proper divisors (4540996).

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

4128140 is a wasteful number, since it uses less digits than its factorization.

4128140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206416 (or 206414 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 4128140 is about 2031.7824686713. The cubic root of 4128140 is about 160.4173997455.

The spelling of 4128140 in words is "four million, one hundred twenty-eight thousand, one hundred forty".