4128765 has 8 divisors (see below), whose sum is σ = 6606048. Its totient is φ = 2202000.

The previous prime is 4128763. The next prime is 4128767. The reversal of 4128765 is 5678214.

It is an interprime number because it is at equal distance from previous prime (4128763) and next prime (4128767).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4128765 - 2¹ = 4128763 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4128763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137611 + ... + 137640.

It is an arithmetic number, because the mean of its divisors is an integer number (825756).

Almost surely, 2^4128765 is an apocalyptic number.

It is an amenable number.

4128765 is a deficient number, since it is larger than the sum of its proper divisors (2477283).

4128765 is a wasteful number, since it uses less digits than its factorization.

4128765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275259.

The product of its digits is 13440, while the sum is 33.

The square root of 4128765 is about 2031.9362686856. The cubic root of 4128765 is about 160.4254950633.

The spelling of 4128765 in words is "four million, one hundred twenty-eight thousand, seven hundred sixty-five".