4020243 has 8 divisors (see below), whose sum is σ = 5369856. Its totient is φ = 2675400.

The previous prime is 4020227. The next prime is 4020257. The reversal of 4020243 is 3420204.

It is a happy number.

4020243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 4020243 - 2⁴ = 4020227 is a prime.

4020243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4020223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1998 + ... + 3468.

It is an arithmetic number, because the mean of its divisors is an integer number (671232).

Almost surely, 2^4020243 is an apocalyptic number.

4020243 is a deficient number, since it is larger than the sum of its proper divisors (1349613).

4020243 is a wasteful number, since it uses less digits than its factorization.

4020243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 4020243 is about 2005.0543633528. The cubic root of 4020243 is about 159.0074360669.

Adding to 4020243 its reverse (3420204), we get a palindrome (7440447).

The spelling of 4020243 in words is "four million, twenty thousand, two hundred forty-three".