4001043115 has 4 divisors (see below), whose sum is σ = 4801251744. Its totient is φ = 3200834488.

The previous prime is 4001043113. The next prime is 4001043121. The reversal of 4001043115 is 5113401004.

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 4001043115 - 2¹ = 4001043113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4001043092 and 4001043101.

It is not an unprimeable number, because it can be changed into a prime (4001043113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400104307 + ... + 400104316.

It is an arithmetic number, because the mean of its divisors is an integer number (1200312936).

Almost surely, 2^4001043115 is an apocalyptic number.

4001043115 is a deficient number, since it is larger than the sum of its proper divisors (800208629).

4001043115 is an equidigital number, since it uses as much as digits as its factorization.

4001043115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800208628.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 4001043115 is about 63253.7992139603. The cubic root of 4001043115 is about 1587.5390267960.

Adding to 4001043115 its reverse (5113401004), we get a palindrome (9114444119).

The spelling of 4001043115 in words is "four billion, one million, forty-three thousand, one hundred fifteen".