4782021 has 8 divisors (see below), whose sum is σ = 6390720. Its totient is φ = 3180672.

The previous prime is 4781993. The next prime is 4782023. The reversal of 4782021 is 1202874.

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

It is not a de Polignac number, because 4782021 - 2⁵ = 4781989 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4781982 and 4782000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4782023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76 + ... + 3093.

It is an arithmetic number, because the mean of its divisors is an integer number (798840).

Almost surely, 2^4782021 is an apocalyptic number.

It is an amenable number.

4782021 is a deficient number, since it is larger than the sum of its proper divisors (1608699).

4782021 is a wasteful number, since it uses less digits than its factorization.

4782021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3675.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 4782021 is about 2186.7832540058. The cubic root of 4782021 is about 168.4756573886.

Adding to 4782021 its reverse (1202874), we get a palindrome (5984895).

The spelling of 4782021 in words is "four million, seven hundred eighty-two thousand, twenty-one".