4705210421 has 2 divisors, whose sum is σ = 4705210422. Its totient is φ = 4705210420.

The previous prime is 4705210409. The next prime is 4705210439. The reversal of 4705210421 is 1240125074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3479230225 + 1225980196 = 58985^2 + 35014^2 .

It is a cyclic number.

It is not a de Polignac number, because 4705210421 - 2¹⁴ = 4705194037 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 (4705210481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2352605210 + 2352605211.

It is an arithmetic number, because the mean of its divisors is an integer number (2352605211).

Almost surely, 2^4705210421 is an apocalyptic number.

It is an amenable number.

4705210421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4705210421 is an equidigital number, since it uses as much as digits as its factorization.

4705210421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 4705210421 is about 68594.5363786359. The cubic root of 4705210421 is about 1675.6874488371.

Adding to 4705210421 its reverse (1240125074), we get a palindrome (5945335495).

The spelling of 4705210421 in words is "four billion, seven hundred five million, two hundred ten thousand, four hundred twenty-one".