421873900 has 36 divisors (see below), whose sum is σ = 1046249008. Its totient is φ = 144642240.

The previous prime is 421873877. The next prime is 421873901. The reversal of 421873900 is 9378124.

It is not an unprimeable number, because it can be changed into a prime (421873901) 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 11 ways as a sum of consecutive naturals, for example, 300639 + ... + 302038.

Almost surely, 2^421873900 is an apocalyptic number.

It is an amenable number.

421873900 is an abundant number, since it is smaller than the sum of its proper divisors (624375108).

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

421873900 is a wasteful number, since it uses less digits than its factorization.

421873900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602698 (or 602691 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 421873900 is about 20539.5691288790. The cubic root of 421873900 is about 749.9993481476. Note that the first 3 decimals are identical.

The spelling of 421873900 in words is "four hundred twenty-one million, eight hundred seventy-three thousand, nine hundred".