4230420581 has 2 divisors, whose sum is σ = 4230420582. Its totient is φ = 4230420580.

The previous prime is 4230420563. The next prime is 4230420599. The reversal of 4230420581 is 1850240324.

It is a happy number.

4230420581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (4230420563) and next prime (4230420599).

It can be written as a sum of positive squares in only one way, i.e., 3588609025 + 641811556 = 59905^2 + 25334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4230420581 is a prime.

It is a super-2 number, since 2×4230420581² = 35792916584296755122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4230420541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2115210290 + 2115210291.

It is an arithmetic number, because the mean of its divisors is an integer number (2115210291).

Almost surely, 2^4230420581 is an apocalyptic number.

It is an amenable number.

4230420581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4230420581 is an equidigital number, since it uses as much as digits as its factorization.

4230420581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 4230420581 is about 65041.6834114862. The cubic root of 4230420581 is about 1617.3146311416.

The spelling of 4230420581 in words is "four billion, two hundred thirty million, four hundred twenty thousand, five hundred eighty-one".