4005240155 has 20 divisors (see below), whose sum is σ = 5607019392. Its totient is φ = 2746442160.

The previous prime is 4005240149. The next prime is 4005240163. The reversal of 4005240155 is 5510425004.

It is not a de Polignac number, because 4005240155 - 2¹⁴ = 4005223771 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 154811 + ... + 178820.

Almost surely, 2^4005240155 is an apocalyptic number.

4005240155 is a deficient number, since it is larger than the sum of its proper divisors (1601779237).

4005240155 is an frugal number, since it uses more digits than its factorization.

4005240155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333664 (or 333643 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 4005240155 is about 63286.9667072139. The cubic root of 4005240155 is about 1588.0939351183.

Adding to 4005240155 its reverse (5510425004), we get a palindrome (9515665159).

The spelling of 4005240155 in words is "four billion, five million, two hundred forty thousand, one hundred fifty-five".