420544 has 14 divisors (see below), whose sum is σ = 834644. Its totient is φ = 210240.

The previous prime is 420521. The next prime is 420551. The reversal of 420544 is 445024.

420544 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

420544 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222 + ... + 3349.

2⁴²⁰⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

420544 is a deficient number, since it is larger than the sum of its proper divisors (414100).

420544 is an equidigital number, since it uses as much as digits as its factorization.

420544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6583 (or 6573 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 420544 is about 648.4936391361. The cubic root of 420544 is about 74.9210428320.

Subtracting from 420544 its product of nonzero digits (640), we obtain a square (419904 = 648²).

Adding to 420544 its reverse (445024), we get a palindrome (865568).

The spelling of 420544 in words is "four hundred twenty thousand, five hundred forty-four".