4020020343 has 12 divisors (see below), whose sum is σ = 5807416888. Its totient is φ = 2679680880.

The previous prime is 4020020341. The next prime is 4020020351. The reversal of 4020020343 is 3430200204.

It is not a de Polignac number, because 4020020343 - 2¹ = 4020020341 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 (4020020341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65196 + ... + 110862.

Almost surely, 2^4020020343 is an apocalyptic number.

4020020343 is a deficient number, since it is larger than the sum of its proper divisors (1787396545).

4020020343 is a wasteful number, since it uses less digits than its factorization.

4020020343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55454 (or 55451 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 4020020343 is about 63403.6303613602. The cubic root of 4020020343 is about 1590.0450052527.

Adding to 4020020343 its reverse (3430200204), we get a palindrome (7450220547).

The spelling of 4020020343 in words is "four billion, twenty million, twenty thousand, three hundred forty-three".