4235085021 has 8 divisors (see below), whose sum is σ = 5651138944. Its totient is φ = 2821210560.

The previous prime is 4235085017. The next prime is 4235085061. The reversal of 4235085021 is 1205805324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4235085021 - 2² = 4235085017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4235085021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4235085061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540325 + ... + 548106.

It is an arithmetic number, because the mean of its divisors is an integer number (706392368).

Almost surely, 2^4235085021 is an apocalyptic number.

It is an amenable number.

4235085021 is a deficient number, since it is larger than the sum of its proper divisors (1416053923).

4235085021 is a wasteful number, since it uses less digits than its factorization.

4235085021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089731.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 4235085021 is about 65077.5308459072. The cubic root of 4235085021 is about 1617.9088270772.

The spelling of 4235085021 in words is "four billion, two hundred thirty-five million, eighty-five thousand, twenty-one".