421850 has 48 divisors (see below), whose sum is σ = 937440. Its totient is φ = 139200.

The previous prime is 421847. The next prime is 421891. The reversal of 421850 is 58124.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 421850.

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 23 ways as a sum of consecutive naturals, for example, 7121 + ... + 7179.

It is an arithmetic number, because the mean of its divisors is an integer number (19530).

2⁴²¹⁸⁵⁰ is an apocalyptic number.

It is a pronic number, being equal to 649×650.

421850 is an abundant number, since it is smaller than the sum of its proper divisors (515590).

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

421850 is a wasteful number, since it uses less digits than its factorization.

421850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 421850 is about 649.4998075442. The cubic root of 421850 is about 74.9985184893.

Adding to 421850 its reverse (58124), we get a palindrome (479974).

The spelling of 421850 in words is "four hundred twenty-one thousand, eight hundred fifty".