4070724821 has 2 divisors, whose sum is σ = 4070724822. Its totient is φ = 4070724820.

The previous prime is 4070724743. The next prime is 4070724841. The reversal of 4070724821 is 1284270704.

It is a happy number.

4070724821 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., 3625725796 + 444999025 = 60214^2 + 21095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4070724821 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4070724841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2035362410 + 2035362411.

It is an arithmetic number, because the mean of its divisors is an integer number (2035362411).

Almost surely, 2^4070724821 is an apocalyptic number.

It is an amenable number.

4070724821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4070724821 is an equidigital number, since it uses as much as digits as its factorization.

4070724821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 4070724821 is about 63802.2321004524. The cubic root of 4070724821 is about 1596.7021684296.

The spelling of 4070724821 in words is "four billion, seventy million, seven hundred twenty-four thousand, eight hundred twenty-one".