420470 has 16 divisors (see below), whose sum is σ = 797040. Its totient is φ = 159264.

The previous prime is 420467. The next prime is 420479. The reversal of 420470 is 74024.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420479) 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, 917 + ... + 1296.

It is an arithmetic number, because the mean of its divisors is an integer number (49815).

2⁴²⁰⁴⁷⁰ is an apocalyptic number.

420470 is a deficient number, since it is larger than the sum of its proper divisors (376570).

420470 is a wasteful number, since it uses less digits than its factorization.

420470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 420470 is about 648.4365813247. The cubic root of 420470 is about 74.9166481413.

Adding to 420470 its reverse (74024), we get a palindrome (494494).

The spelling of 420470 in words is "four hundred twenty thousand, four hundred seventy", and thus it is an iban number.