4002103421 has 2 divisors, whose sum is σ = 4002103422. Its totient is φ = 4002103420.

The previous prime is 4002103403. The next prime is 4002103471. The reversal of 4002103421 is 1243012004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3833467225 + 168636196 = 61915^2 + 12986^2 .

It is a cyclic number.

It is not a de Polignac number, because 4002103421 - 2¹⁰ = 4002102397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4002103421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4002103471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001051710 + 2001051711.

It is an arithmetic number, because the mean of its divisors is an integer number (2001051711).

Almost surely, 2^4002103421 is an apocalyptic number.

It is an amenable number.

4002103421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4002103421 is an equidigital number, since it uses as much as digits as its factorization.

4002103421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 4002103421 is about 63262.1800209256. The cubic root of 4002103421 is about 1587.6792509354.

Adding to 4002103421 its reverse (1243012004), we get a palindrome (5245115425).

The spelling of 4002103421 in words is "four billion, two million, one hundred three thousand, four hundred twenty-one".