4021320143 has 4 divisors (see below), whose sum is σ = 4028290080. Its totient is φ = 4014350208.

The previous prime is 4021320103. The next prime is 4021320167. The reversal of 4021320143 is 3410231204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4021320143 - 2²⁶ = 3954211279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021320103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3484103 + ... + 3485256.

It is an arithmetic number, because the mean of its divisors is an integer number (1007072520).

Almost surely, 2^4021320143 is an apocalyptic number.

4021320143 is a deficient number, since it is larger than the sum of its proper divisors (6969937).

4021320143 is an equidigital number, since it uses as much as digits as its factorization.

4021320143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6969936.

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

The square root of 4021320143 is about 63413.8797346448. The cubic root of 4021320143 is about 1590.2163574362.

Adding to 4021320143 its reverse (3410231204), we get a palindrome (7431551347).

The spelling of 4021320143 in words is "four billion, twenty-one million, three hundred twenty thousand, one hundred forty-three".