4020345443 has 8 divisors (see below), whose sum is σ = 4047553200. Its totient is φ = 3993183648.

The previous prime is 4020345403. The next prime is 4020345457. The reversal of 4020345443 is 3445430204.

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

It is a cyclic number.

It is not a de Polignac number, because 4020345443 - 2¹⁴ = 4020329059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020345403) 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, 174068 + ... + 195806.

It is an arithmetic number, because the mean of its divisors is an integer number (505944150).

Almost surely, 2^4020345443 is an apocalyptic number.

4020345443 is a deficient number, since it is larger than the sum of its proper divisors (27207757).

4020345443 is a wasteful number, since it uses less digits than its factorization.

4020345443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22981.

The product of its (nonzero) digits is 23040, while the sum is 29.

The square root of 4020345443 is about 63406.1940428536. The cubic root of 4020345443 is about 1590.0878665365.

Adding to 4020345443 its reverse (3445430204), we get a palindrome (7465775647).

The spelling of 4020345443 in words is "four billion, twenty million, three hundred forty-five thousand, four hundred forty-three".