4021546 has 8 divisors (see below), whose sum is σ = 6240420. Its totient is φ = 1941408.

The previous prime is 4021543. The next prime is 4021561. The reversal of 4021546 is 6451204.

It can be written as a sum of positive squares in 2 ways, for example, as 4020025 + 1521 = 2005^2 + 39^2 .

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

It is not an unprimeable number, because it can be changed into a prime (4021543) 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 3 ways as a sum of consecutive naturals, for example, 34611 + ... + 34726.

Almost surely, 2^4021546 is an apocalyptic number.

4021546 is a deficient number, since it is larger than the sum of its proper divisors (2218874).

4021546 is a wasteful number, since it uses less digits than its factorization.

4021546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69368.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 4021546 is about 2005.3792658747. The cubic root of 4021546 is about 159.0246128321.

The spelling of 4021546 in words is "four million, twenty-one thousand, five hundred forty-six".