4128005 has 32 divisors (see below), whose sum is σ = 6048000. Its totient is φ = 2700096.

The previous prime is 4127999. The next prime is 4128013. The reversal of 4128005 is 5008214.

It is not a de Polignac number, because 4128005 - 2⁴ = 4127989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49694 + ... + 49776.

It is an arithmetic number, because the mean of its divisors is an integer number (189000).

Almost surely, 2^4128005 is an apocalyptic number.

It is an amenable number.

4128005 is a deficient number, since it is larger than the sum of its proper divisors (1919995).

4128005 is an equidigital number, since it uses as much as digits as its factorization.

4128005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 4128005 is about 2031.7492463392. The cubic root of 4128005 is about 160.4156510496.

The spelling of 4128005 in words is "four million, one hundred twenty-eight thousand, five".