420524 has 12 divisors (see below), whose sum is σ = 792624. Its totient is φ = 194064.

The previous prime is 420521. The next prime is 420551. The reversal of 420524 is 425024.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (420521) 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, 3992 + ... + 4095.

It is an arithmetic number, because the mean of its divisors is an integer number (66052).

2⁴²⁰⁵²⁴ is an apocalyptic number.

It is an amenable number.

420524 is a deficient number, since it is larger than the sum of its proper divisors (372100).

420524 is a wasteful number, since it uses less digits than its factorization.

420524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8104 (or 8102 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 420524 is about 648.4782186011. The cubic root of 420524 is about 74.9198551286.

Adding to 420524 its reverse (425024), we get a palindrome (845548).

The spelling of 420524 in words is "four hundred twenty thousand, five hundred twenty-four".