4004020043 has 8 divisors (see below), whose sum is σ = 4255680000. Its totient is φ = 3756452328.

The previous prime is 4004020003. The next prime is 4004020051. The reversal of 4004020043 is 3400204004.

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 4004020043 - 2¹⁸ = 4003757899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4004020003) 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, 1021043 + ... + 1024956.

It is an arithmetic number, because the mean of its divisors is an integer number (531960000).

Almost surely, 2^4004020043 is an apocalyptic number.

4004020043 is a deficient number, since it is larger than the sum of its proper divisors (251659957).

4004020043 is a wasteful number, since it uses less digits than its factorization.

4004020043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046121.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 4004020043 is about 63277.3264526876. The cubic root of 4004020043 is about 1587.9326589583.

Adding to 4004020043 its reverse (3400204004), we get a palindrome (7404224047).

The spelling of 4004020043 in words is "four billion, four million, twenty thousand, forty-three".