4000001043 has 8 divisors (see below), whose sum is σ = 5647060368. Its totient is φ = 2509804544.

The previous prime is 4000001039. The next prime is 4000001051. The reversal of 4000001043 is 3401000004.

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 4000001043 - 2² = 4000001039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4000001003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39215646 + ... + 39215747.

It is an arithmetic number, because the mean of its divisors is an integer number (705882546).

Almost surely, 2^4000001043 is an apocalyptic number.

4000001043 is a deficient number, since it is larger than the sum of its proper divisors (1647059325).

4000001043 is a wasteful number, since it uses less digits than its factorization.

4000001043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78431413.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 4000001043 is about 63245.5614490060. The cubic root of 4000001043 is about 1587.4011899398.

Adding to 4000001043 its reverse (3401000004), we get a palindrome (7401001047).

The spelling of 4000001043 in words is "four billion, one thousand, forty-three".