4221570 has 32 divisors (see below), whose sum is σ = 10232640. Its totient is φ = 1114560.

The previous prime is 4221563. The next prime is 4221571. The reversal of 4221570 is 751224.

It is not an unprimeable number, because it can be changed into a prime (4221571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2625 + ... + 3915.

It is an arithmetic number, because the mean of its divisors is an integer number (319770).

Almost surely, 2^4221570 is an apocalyptic number.

4221570 is an abundant number, since it is smaller than the sum of its proper divisors (6011070).

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

4221570 is a wasteful number, since it uses less digits than its factorization.

4221570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410.

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

The square root of 4221570 is about 2054.6459549032. The cubic root of 4221570 is about 161.6185967309.

Adding to 4221570 its reverse (751224), we get a palindrome (4972794).

It can be divided in two parts, 42 and 21570, that added together give a palindrome (21612).

The spelling of 4221570 in words is "four million, two hundred twenty-one thousand, five hundred seventy".