4021033421 has 8 divisors (see below), whose sum is σ = 4045192704. Its totient is φ = 3996906880.

The previous prime is 4021033417. The next prime is 4021033447. The reversal of 4021033421 is 1243301204.

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 4021033421 - 2² = 4021033417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4021033393 and 4021033402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021033451) 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 7 ways as a sum of consecutive naturals, for example, 265181 + ... + 279933.

It is an arithmetic number, because the mean of its divisors is an integer number (505649088).

Almost surely, 2^4021033421 is an apocalyptic number.

It is an amenable number.

4021033421 is a deficient number, since it is larger than the sum of its proper divisors (24159283).

4021033421 is a wasteful number, since it uses less digits than its factorization.

4021033421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16371.

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

The square root of 4021033421 is about 63411.6189747589. The cubic root of 4021033421 is about 1590.1785621489.

Adding to 4021033421 its reverse (1243301204), we get a palindrome (5264334625).

The spelling of 4021033421 in words is "four billion, twenty-one million, thirty-three thousand, four hundred twenty-one".