4021402303443 has 16 divisors (see below), whose sum is σ = 6270359296256. Its totient is φ = 2244503610720.

The previous prime is 4021402303421. The next prime is 4021402303459. The reversal of 4021402303443 is 3443032041204.

It is a happy number.

It is not a de Polignac number, because 4021402303443 - 2¹⁶ = 4021402237907 is a prime.

It is a super-2 number, since 2×4021402303443² (a number of 26 digits) contains 22 as substring.

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 4021402303443.

It is not an unprimeable number, because it can be changed into a prime (4021402303483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2226689188 + ... + 2226690993.

It is an arithmetic number, because the mean of its divisors is an integer number (391897456016).

Almost surely, 2^{4021402303443} is an apocalyptic number.

4021402303443 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

4021402303443 is a deficient number, since it is larger than the sum of its proper divisors (2248956992813).

4021402303443 is a wasteful number, since it uses less digits than its factorization.

4021402303443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453380234.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 4021402303443 its reverse (3443032041204), we get a palindrome (7464434344647).

The spelling of 4021402303443 in words is "four trillion, twenty-one billion, four hundred two million, three hundred three thousand, four hundred forty-three".