4342013821 has 2 divisors, whose sum is σ = 4342013822. Its totient is φ = 4342013820.

The previous prime is 4342013803. The next prime is 4342013827. The reversal of 4342013821 is 1283102434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3275272900 + 1066740921 = 57230^2 + 32661^2 .

It is a cyclic number.

It is not a de Polignac number, because 4342013821 - 2⁵ = 4342013789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4342013821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4342013827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2171006910 + 2171006911.

It is an arithmetic number, because the mean of its divisors is an integer number (2171006911).

Almost surely, 2^4342013821 is an apocalyptic number.

It is an amenable number.

4342013821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4342013821 is an equidigital number, since it uses as much as digits as its factorization.

4342013821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 4342013821 is about 65893.9589112689. The cubic root of 4342013821 is about 1631.4123056386.

The spelling of 4342013821 in words is "four billion, three hundred forty-two million, thirteen thousand, eight hundred twenty-one".