4020001044 has 12 divisors (see below), whose sum is σ = 9380002464. Its totient is φ = 1340000344.

The previous prime is 4020000991. The next prime is 4020001079. The reversal of 4020001044 is 4401000204.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×4020001044² = 32320816787522179872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 167500032 + ... + 167500055.

It is an arithmetic number, because the mean of its divisors is an integer number (781666872).

Almost surely, 2^4020001044 is an apocalyptic number.

It is an amenable number.

4020001044 is an abundant number, since it is smaller than the sum of its proper divisors (5360001420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4020001044 is a wasteful number, since it uses less digits than its factorization.

4020001044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335000094 (or 335000092 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4020001044 is about 63403.4781695768. The cubic root of 4020001044 is about 1590.0424607940.

Adding to 4020001044 its reverse (4401000204), we get a palindrome (8421001248).

The spelling of 4020001044 in words is "four billion, twenty million, one thousand, forty-four".