4013244021 has 8 divisors (see below), whose sum is σ = 5353990240. Its totient is φ = 2673996912.

The previous prime is 4013243999. The next prime is 4013244031. The reversal of 4013244021 is 1204423104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4013244021 - 2⁷ = 4013243893 is a prime.

It is a super-2 number, since 2×4013244021² = 32212255144184496882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013244031) 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, 368515 + ... + 379248.

It is an arithmetic number, because the mean of its divisors is an integer number (669248780).

Almost surely, 2^4013244021 is an apocalyptic number.

It is an amenable number.

4013244021 is a deficient number, since it is larger than the sum of its proper divisors (1340746219).

4013244021 is a wasteful number, since it uses less digits than its factorization.

4013244021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749555.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4013244021 is about 63350.1698577044. The cubic root of 4013244021 is about 1589.1510863350.

Adding to 4013244021 its reverse (1204423104), we get a palindrome (5217667125).

The spelling of 4013244021 in words is "four billion, thirteen million, two hundred forty-four thousand, twenty-one".