421875180 has 72 divisors (see below), whose sum is σ = 1323831600. Its totient is φ = 108619392.

The previous prime is 421875169. The next prime is 421875211. The reversal of 421875180 is 81578124.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35190 + ... + 45629.

It is an arithmetic number, because the mean of its divisors is an integer number (18386550).

Almost surely, 2^421875180 is an apocalyptic number.

It is an amenable number.

421875180 is an abundant number, since it is smaller than the sum of its proper divisors (901956420).

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

421875180 is a wasteful number, since it uses less digits than its factorization.

421875180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80863 (or 80858 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 421875180 is about 20539.6002882237. The cubic root of 421875180 is about 750.0001066667. Note that the first 3 decimals are identical.

The spelling of 421875180 in words is "four hundred twenty-one million, eight hundred seventy-five thousand, one hundred eighty".