4020343 has 4 divisors (see below), whose sum is σ = 4231960. Its totient is φ = 3808728.

The previous prime is 4020323. The next prime is 4020349. The reversal of 4020343 is 3430204.

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 4020343 - 2⁹ = 4019831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020349) 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, 105780 + ... + 105817.

It is an arithmetic number, because the mean of its divisors is an integer number (1057990).

Almost surely, 2^4020343 is an apocalyptic number.

4020343 is a deficient number, since it is larger than the sum of its proper divisors (211617).

4020343 is a wasteful number, since it uses less digits than its factorization.

4020343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211616.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 4020343 is about 2005.0793001774. The cubic root of 4020343 is about 159.0087544459.

Adding to 4020343 its reverse (3430204), we get a palindrome (7450547).

The spelling of 4020343 in words is "four million, twenty thousand, three hundred forty-three".