421987250 has 16 divisors (see below), whose sum is σ = 789960600. Its totient is φ = 168794800.

The previous prime is 421987249. The next prime is 421987259. The reversal of 421987250 is 52789124.

It can be written as a sum of positive squares in 4 ways, for example, as 60949249 + 361038001 = 7807^2 + 19001^2 .

It is not an unprimeable number, because it can be changed into a prime (421987259) 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 7 ways as a sum of consecutive naturals, for example, 843725 + ... + 844224.

Almost surely, 2^421987250 is an apocalyptic number.

421987250 is a deficient number, since it is larger than the sum of its proper divisors (367973350).

421987250 is a wasteful number, since it uses less digits than its factorization.

421987250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687966 (or 1687956 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 421987250 is about 20542.3282516856. The cubic root of 421987250 is about 750.0665126198.

The spelling of 421987250 in words is "four hundred twenty-one million, nine hundred eighty-seven thousand, two hundred fifty".