420558 has 16 divisors (see below), whose sum is σ = 870480. Its totient is φ = 135296.

The previous prime is 420557. The next prime is 420569. The reversal of 420558 is 855024.

It is a super-3 number, since 3×420558³ = 223151058277143336, which contains 333 as substring.

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 (420551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1035 + ... + 1382.

It is an arithmetic number, because the mean of its divisors is an integer number (54405).

2⁴²⁰⁵⁵⁸ is an apocalyptic number.

420558 is an abundant number, since it is smaller than the sum of its proper divisors (449922).

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

420558 is a wasteful number, since it uses less digits than its factorization.

420558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 420558 is about 648.5044332925. The cubic root of 420558 is about 74.9218742019.

The spelling of 420558 in words is "four hundred twenty thousand, five hundred fifty-eight".