4285021 has 4 divisors (see below), whose sum is σ = 4614652. Its totient is φ = 3955392.

The previous prime is 4285019. The next prime is 4285049. The reversal of 4285021 is 1205824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 617796 + 3667225 = 786^2 + 1915^2 .

It is a cyclic number.

It is not a de Polignac number, because 4285021 - 2¹ = 4285019 is a prime.

It is a super-2 number, since 2×4285021² = 36722809940882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4284983 and 4285001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4285321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164796 + ... + 164821.

It is an arithmetic number, because the mean of its divisors is an integer number (1153663).

Almost surely, 2^4285021 is an apocalyptic number.

It is an amenable number.

4285021 is a deficient number, since it is larger than the sum of its proper divisors (329631).

4285021 is a wasteful number, since it uses less digits than its factorization.

4285021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329630.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 4285021 is about 2070.0292268468. The cubic root of 4285021 is about 162.4242929395.

The spelling of 4285021 in words is "four million, two hundred eighty-five thousand, twenty-one".