421250505 has 16 divisors (see below), whose sum is σ = 725847360. Its totient is φ = 207384768.

The previous prime is 421250471. The next prime is 421250521. The reversal of 421250505 is 505052124.

It is a happy number.

It is not a de Polignac number, because 421250505 - 2¹² = 421246409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1079935 + ... + 1080324.

It is an arithmetic number, because the mean of its divisors is an integer number (45365460).

Almost surely, 2^421250505 is an apocalyptic number.

It is an amenable number.

421250505 is a deficient number, since it is larger than the sum of its proper divisors (304596855).

421250505 is a wasteful number, since it uses less digits than its factorization.

421250505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160280.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 421250505 is about 20524.3880542149. The cubic root of 421250505 is about 749.6297461351.

The spelling of 421250505 in words is "four hundred twenty-one million, two hundred fifty thousand, five hundred five".