4221750 has 64 divisors (see below), whose sum is σ = 11374272. Its totient is φ = 1036800.

The previous prime is 4221713. The next prime is 4221751. The reversal of 4221750 is 571224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9534 + ... + 9966.

It is an arithmetic number, because the mean of its divisors is an integer number (177723).

Almost surely, 2^4221750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4221750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5687136).

4221750 is an abundant number, since it is smaller than the sum of its proper divisors (7152522).

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

4221750 is a wasteful number, since it uses less digits than its factorization.

4221750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 4221750 is about 2054.6897576033. The cubic root of 4221750 is about 161.6208937384.

Adding to 4221750 its reverse (571224), we get a palindrome (4792974).

The spelling of 4221750 in words is "four million, two hundred twenty-one thousand, seven hundred fifty".