4001243321 has 8 divisors (see below), whose sum is σ = 4079087424. Its totient is φ = 3923486320.

The previous prime is 4001243299. The next prime is 4001243359. The reversal of 4001243321 is 1233421004.

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 4001243321 - 2¹⁸ = 4000981177 is a prime.

It is a super-2 number, since 2×4001243321² = 32019896227694218082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4001243293 and 4001243302.

It is not an unprimeable number, because it can be changed into a prime (4001243021) 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, 75140 + ... + 116826.

It is an arithmetic number, because the mean of its divisors is an integer number (509885928).

Almost surely, 2^4001243321 is an apocalyptic number.

It is an amenable number.

4001243321 is a deficient number, since it is larger than the sum of its proper divisors (77844103).

4001243321 is a wasteful number, since it uses less digits than its factorization.

4001243321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43551.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 4001243321 is about 63255.3817552309. The cubic root of 4001243321 is about 1587.5655056856.

Adding to 4001243321 its reverse (1233421004), we get a palindrome (5234664325).

The spelling of 4001243321 in words is "four billion, one million, two hundred forty-three thousand, three hundred twenty-one".