4233340421 has 2 divisors, whose sum is σ = 4233340422. Its totient is φ = 4233340420.

The previous prime is 4233340387. The next prime is 4233340427. The reversal of 4233340421 is 1240433324.

4233340421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4081804321 + 151536100 = 63889^2 + 12310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4233340421 is a prime.

It is a super-2 number, since 2×4233340421² = 35842342240144914482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4233340427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2116670210 + 2116670211.

It is an arithmetic number, because the mean of its divisors is an integer number (2116670211).

Almost surely, 2^4233340421 is an apocalyptic number.

It is an amenable number.

4233340421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4233340421 is an equidigital number, since it uses as much as digits as its factorization.

4233340421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 4233340421 is about 65064.1254532788. The cubic root of 4233340421 is about 1617.6866362282.

Adding to 4233340421 its reverse (1240433324), we get a palindrome (5473773745).

The spelling of 4233340421 in words is "four billion, two hundred thirty-three million, three hundred forty thousand, four hundred twenty-one".