4230434521 has 2 divisors, whose sum is σ = 4230434522. Its totient is φ = 4230434520.

The previous prime is 4230434441. The next prime is 4230434563. The reversal of 4230434521 is 1254340324.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4223570121 + 6864400 = 64989^2 + 2620^2 .

It is a cyclic number.

It is not a de Polignac number, because 4230434521 - 2⁹ = 4230434009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4230434521.

It is not a weakly prime, because it can be changed into another prime (4230434821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2115217260 + 2115217261.

It is an arithmetic number, because the mean of its divisors is an integer number (2115217261).

Almost surely, 2^4230434521 is an apocalyptic number.

It is an amenable number.

4230434521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4230434521 is an equidigital number, since it uses as much as digits as its factorization.

4230434521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 4230434521 is about 65041.7905734459. The cubic root of 4230434521 is about 1617.3164075876.

Adding to 4230434521 its reverse (1254340324), we get a palindrome (5484774845).

The spelling of 4230434521 in words is "four billion, two hundred thirty million, four hundred thirty-four thousand, five hundred twenty-one".