4021421233403 has 8 divisors (see below), whose sum is σ = 4601272776672. Its totient is φ = 3442910389056.

The previous prime is 4021421233363. The next prime is 4021421233409. The reversal of 4021421233403 is 3043321241204.

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 4021421233403 - 2¹⁴ = 4021421217019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4021421233409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335168300 + ... + 335180297.

It is an arithmetic number, because the mean of its divisors is an integer number (575159097084).

Almost surely, 2^{4021421233403} is an apocalyptic number.

4021421233403 is a deficient number, since it is larger than the sum of its proper divisors (579851543269).

4021421233403 is an equidigital number, since it uses as much as digits as its factorization.

4021421233403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670349461.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 4021421233403 its reverse (3043321241204), we get a palindrome (7064742474607).

The spelling of 4021421233403 in words is "four trillion, twenty-one billion, four hundred twenty-one million, two hundred thirty-three thousand, four hundred three".