4024019921 has 2 divisors, whose sum is σ = 4024019922. Its totient is φ = 4024019920.

The previous prime is 4024019911. The next prime is 4024020029. The reversal of 4024019921 is 1299104204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3351136321 + 672883600 = 57889^2 + 25940^2 .

It is a cyclic number.

It is not a de Polignac number, because 4024019921 - 2¹⁰ = 4024018897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4024019911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2012009960 + 2012009961.

It is an arithmetic number, because the mean of its divisors is an integer number (2012009961).

Almost surely, 2^4024019921 is an apocalyptic number.

It is an amenable number.

4024019921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4024019921 is an equidigital number, since it uses as much as digits as its factorization.

4024019921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 4024019921 is about 63435.1631274012. The cubic root of 4024019921 is about 1590.5721502742.

The spelling of 4024019921 in words is "four billion, twenty-four million, nineteen thousand, nine hundred twenty-one".