421275280 has 40 divisors (see below), whose sum is σ = 981758592. Its totient is φ = 168115584.

The previous prime is 421275233. The next prime is 421275307. The reversal of 421275280 is 82572124.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

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, 29497 + ... + 41383.

Almost surely, 2^421275280 is an apocalyptic number.

421275280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421275280 is an abundant number, since it is smaller than the sum of its proper divisors (560483312).

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

421275280 is a wasteful number, since it uses less digits than its factorization.

421275280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12343 (or 12337 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 421275280 is about 20524.9915956134. The cubic root of 421275280 is about 749.6444418349.

The spelling of 421275280 in words is "four hundred twenty-one million, two hundred seventy-five thousand, two hundred eighty".