420420320 has 24 divisors (see below), whose sum is σ = 993243384. Its totient is φ = 168168064.

The previous prime is 420420317. The next prime is 420420361. The reversal of 420420320 is 23024024.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1313654 + ... + 1313973.

It is an arithmetic number, because the mean of its divisors is an integer number (41385141).

Almost surely, 2^420420320 is an apocalyptic number.

420420320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420420320 is an abundant number, since it is smaller than the sum of its proper divisors (572823064).

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

420420320 is a wasteful number, since it uses less digits than its factorization.

420420320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627642 (or 2627634 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 420420320 is about 20504.1537255260. The cubic root of 420420320 is about 749.1369747048.

Adding to 420420320 its reverse (23024024), we get a palindrome (443444344).

The spelling of 420420320 in words is "four hundred twenty million, four hundred twenty thousand, three hundred twenty".