4021243014421 has 8 divisors (see below), whose sum is σ = 4130489656664. Its totient is φ = 3912026077440.

The previous prime is 4021243014419. The next prime is 4021243014457. The reversal of 4021243014421 is 1244103421204.

It can be written as a sum of positive squares in 4 ways, for example, as 29278974321 + 3991964040100 = 171111^2 + 1997990^2 .

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 4021243014421 - 2¹ = 4021243014419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4021243014421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021243011421) 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, 7151760 + ... + 7693513.

It is an arithmetic number, because the mean of its divisors is an integer number (516311207083).

Almost surely, 2^{4021243014421} is an apocalyptic number.

It is an amenable number.

4021243014421 is a deficient number, since it is larger than the sum of its proper divisors (109246642243).

4021243014421 is a wasteful number, since it uses less digits than its factorization.

4021243014421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14852631.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 4021243014421 its reverse (1244103421204), we get a palindrome (5265346435625).

The spelling of 4021243014421 in words is "four trillion, twenty-one billion, two hundred forty-three million, fourteen thousand, four hundred twenty-one".