420001323320 has 32 divisors (see below), whose sum is σ = 945232329600. Its totient is φ = 167959755648.

The previous prime is 420001323307. The next prime is 420001323347. The reversal of 420001323320 is 23323100024.

It is a super-2 number, since 2×420001323320² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 420001323292 and 420001323301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1107035 + ... + 1437194.

It is an arithmetic number, because the mean of its divisors is an integer number (29538510300).

Almost surely, 2^420001323320 is an apocalyptic number.

420001323320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420001323320 is an abundant number, since it is smaller than the sum of its proper divisors (525231006280).

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

420001323320 is a wasteful number, since it uses less digits than its factorization.

420001323320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548367 (or 2548363 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 420001323320 its reverse (23323100024), we get a palindrome (443324423344).

The spelling of 420001323320 in words is "four hundred twenty billion, one million, three hundred twenty-three thousand, three hundred twenty".