4785421 has 2 divisors, whose sum is σ = 4785422. Its totient is φ = 4785420.

The previous prime is 4785419. The next prime is 4785463. The reversal of 4785421 is 1245874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2856100 + 1929321 = 1690^2 + 1389^2 .

It is a cyclic number.

It is not a de Polignac number, because 4785421 - 2¹ = 4785419 is a prime.

Together with 4785419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4785401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2392710 + 2392711.

It is an arithmetic number, because the mean of its divisors is an integer number (2392711).

Almost surely, 2^4785421 is an apocalyptic number.

It is an amenable number.

4785421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4785421 is an equidigital number, since it uses as much as digits as its factorization.

4785421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 31.

The square root of 4785421 is about 2187.5605134487. The cubic root of 4785421 is about 168.5155764613.

The spelling of 4785421 in words is "four million, seven hundred eighty-five thousand, four hundred twenty-one".