421353280 has 28 divisors (see below), whose sum is σ = 1003348260. Its totient is φ = 168541184.

The previous prime is 421353277. The next prime is 421353281. The reversal of 421353280 is 82353124.

It can be written as a sum of positive squares in 2 ways, for example, as 65804544 + 355548736 = 8112^2 + 18856^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421353281) by changing a digit.

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, 658045 + ... + 658684.

Almost surely, 2^421353280 is an apocalyptic number.

421353280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421353280 is an abundant number, since it is smaller than the sum of its proper divisors (581994980).

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

421353280 is a wasteful number, since it uses less digits than its factorization.

421353280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316746 (or 1316736 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 421353280 is about 20526.8916302493. The cubic root of 421353280 is about 749.6907050590.

The spelling of 421353280 in words is "four hundred twenty-one million, three hundred fifty-three thousand, two hundred eighty".