421717652 has 24 divisors (see below), whose sum is σ = 779708160. Its totient is φ = 199253600.

The previous prime is 421717643. The next prime is 421717679. The reversal of 421717652 is 256717124.

It is a congruent number.

It is an unprimeable number.

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, 33224 + ... + 44127.

It is an arithmetic number, because the mean of its divisors is an integer number (32487840).

Almost surely, 2^421717652 is an apocalyptic number.

It is an amenable number.

421717652 is a deficient number, since it is larger than the sum of its proper divisors (357990508).

421717652 is a wasteful number, since it uses less digits than its factorization.

421717652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77431 (or 77429 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 421717652 is about 20535.7651914897. The cubic root of 421717652 is about 749.9067451459.

The spelling of 421717652 in words is "four hundred twenty-one million, seven hundred seventeen thousand, six hundred fifty-two".