421200320 has 28 divisors (see below), whose sum is σ = 1002984024. Its totient is φ = 168480000.

The previous prime is 421200319. The next prime is 421200331. The reversal of 421200320 is 23002124.

It is a junction number, because it is equal to n+sod(n) for n = 421200295 and 421200304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657806 + ... + 658445.

It is an arithmetic number, because the mean of its divisors is an integer number (35820858).

Almost surely, 2^421200320 is an apocalyptic number.

421200320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421200320 is an abundant number, since it is smaller than the sum of its proper divisors (581783704).

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

421200320 is a wasteful number, since it uses less digits than its factorization.

421200320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316268 (or 1316258 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 421200320 is about 20523.1654478543. The cubic root of 421200320 is about 749.5999763090.

Adding to 421200320 its reverse (23002124), we get a palindrome (444202444).

The spelling of 421200320 in words is "four hundred twenty-one million, two hundred thousand, three hundred twenty".