4028243 has 4 divisors (see below), whose sum is σ = 4203408. Its totient is φ = 3853080.

The previous prime is 4028231. The next prime is 4028251. The reversal of 4028243 is 3428204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4028243 - 2⁶ = 4028179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 175141 = 4028243 / (4 + 0 + 2 + 8 + 2 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4028273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87548 + ... + 87593.

It is an arithmetic number, because the mean of its divisors is an integer number (1050852).

Almost surely, 2^4028243 is an apocalyptic number.

4028243 is a deficient number, since it is larger than the sum of its proper divisors (175165).

4028243 is a wasteful number, since it uses less digits than its factorization.

4028243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175164.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4028243 is about 2007.0483302601. The cubic root of 4028243 is about 159.1128373781.

The spelling of 4028243 in words is "four million, twenty-eight thousand, two hundred forty-three".