4020165043 has 4 divisors (see below), whose sum is σ = 4023385000. Its totient is φ = 4016945088.

The previous prime is 4020165041. The next prime is 4020165059. The reversal of 4020165043 is 3405610204.

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 4020165043 - 2¹ = 4020165041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4020164999 and 4020165017.

It is not an unprimeable number, because it can be changed into a prime (4020165041) 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, 1608105 + ... + 1610602.

It is an arithmetic number, because the mean of its divisors is an integer number (1005846250).

Almost surely, 2^4020165043 is an apocalyptic number.

4020165043 is a deficient number, since it is larger than the sum of its proper divisors (3219957).

4020165043 is a wasteful number, since it uses less digits than its factorization.

4020165043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219956.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 4020165043 is about 63404.7714529435. The cubic root of 4020165043 is about 1590.0640828305.

Adding to 4020165043 its reverse (3405610204), we get a palindrome (7425775247).

The spelling of 4020165043 in words is "four billion, twenty million, one hundred sixty-five thousand, forty-three".