4235200721 has 2 divisors, whose sum is σ = 4235200722. Its totient is φ = 4235200720.

The previous prime is 4235200679. The next prime is 4235200751. The reversal of 4235200721 is 1270025324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3493401025 + 741799696 = 59105^2 + 27236^2 .

It is a cyclic number.

It is not a de Polignac number, because 4235200721 - 2¹⁰ = 4235199697 is a prime.

It is not a weakly prime, because it can be changed into another prime (4235200751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2117600360 + 2117600361.

It is an arithmetic number, because the mean of its divisors is an integer number (2117600361).

Almost surely, 2^4235200721 is an apocalyptic number.

It is an amenable number.

4235200721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4235200721 is an equidigital number, since it uses as much as digits as its factorization.

4235200721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 4235200721 is about 65078.4197795245. The cubic root of 4235200721 is about 1617.9235603782.

The spelling of 4235200721 in words is "four billion, two hundred thirty-five million, two hundred thousand, seven hundred twenty-one".