4030232021 has 2 divisors, whose sum is σ = 4030232022. Its totient is φ = 4030232020.

The previous prime is 4030232009. The next prime is 4030232023. The reversal of 4030232021 is 1202320304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3817509796 + 212722225 = 61786^2 + 14585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4030232021 is a prime.

Together with 4030232023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4030232023) 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, 2015116010 + 2015116011.

It is an arithmetic number, because the mean of its divisors is an integer number (2015116011).

Almost surely, 2^4030232021 is an apocalyptic number.

It is an amenable number.

4030232021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4030232021 is an equidigital number, since it uses as much as digits as its factorization.

4030232021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 4030232021 is about 63484.1084130509. The cubic root of 4030232021 is about 1591.3902139102.

Adding to 4030232021 its reverse (1202320304), we get a palindrome (5232552325).

The spelling of 4030232021 in words is "four billion, thirty million, two hundred thirty-two thousand, twenty-one".