420798 has 32 divisors (see below), whose sum is σ = 988416. Its totient is φ = 116928.

The previous prime is 420781. The next prime is 420799. The reversal of 420798 is 897024.

It is a super-3 number, since 3×420798³ = 223533313443628776, which contains 333 as substring.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420799) 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 15 ways as a sum of consecutive naturals, for example, 1690 + ... + 1922.

It is an arithmetic number, because the mean of its divisors is an integer number (30888).

2⁴²⁰⁷⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494208).

420798 is an abundant number, since it is smaller than the sum of its proper divisors (567618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420798 is a wasteful number, since it uses less digits than its factorization.

420798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 420798 is about 648.6894480412. The cubic root of 420798 is about 74.9361233903.

It can be divided in two parts, 4 and 20798, that added together give a palindrome (20802).

The spelling of 420798 in words is "four hundred twenty thousand, seven hundred ninety-eight".