4221140 has 48 divisors (see below), whose sum is σ = 11055744. Its totient is φ = 1315200.

The previous prime is 4221109. The next prime is 4221169. The reversal of 4221140 is 411224.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

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, 170 + ... + 2910.

It is an arithmetic number, because the mean of its divisors is an integer number (230328).

Almost surely, 2^4221140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4221140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5527872).

4221140 is an abundant number, since it is smaller than the sum of its proper divisors (6834604).

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

4221140 is a wasteful number, since it uses less digits than its factorization.

4221140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768 (or 2766 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 4221140 is about 2054.5413113393. The cubic root of 4221140 is about 161.6131091708.

Adding to 4221140 its reverse (411224), we get a palindrome (4632364).

The spelling of 4221140 in words is "four million, two hundred twenty-one thousand, one hundred forty".