420533601 has 16 divisors (see below), whose sum is σ = 576840000. Its totient is φ = 272317248.

The previous prime is 420533591. The next prime is 420533609. The reversal of 420533601 is 106335024.

It is a happy number.

It is not a de Polignac number, because 420533601 - 2¹³ = 420525409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420533609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70275 + ... + 76023.

It is an arithmetic number, because the mean of its divisors is an integer number (36052500).

Almost surely, 2^420533601 is an apocalyptic number.

It is an amenable number.

420533601 is a deficient number, since it is larger than the sum of its proper divisors (156306399).

420533601 is a wasteful number, since it uses less digits than its factorization.

420533601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6448.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 420533601 is about 20506.9159309731. The cubic root of 420533601 is about 749.2042529029.

Adding to 420533601 its reverse (106335024), we get a palindrome (526868625).

It can be divided in two parts, 42053 and 3601, that added together give a palindrome (45654).

The spelling of 420533601 in words is "four hundred twenty million, five hundred thirty-three thousand, six hundred one".