4123444220 has 48 divisors (see below), whose sum is σ = 10417128960. Its totient is φ = 1339343424.

The previous prime is 4123444187. The next prime is 4123444229. The reversal of 4123444220 is 224443214.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4123444220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4123444229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 772424 + ... + 777743.

It is an arithmetic number, because the mean of its divisors is an integer number (217023520).

Almost surely, 2^4123444220 is an apocalyptic number.

It is an amenable number.

4123444220 is an abundant number, since it is smaller than the sum of its proper divisors (6293684740).

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

4123444220 is a wasteful number, since it uses less digits than its factorization.

4123444220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550202 (or 1550200 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 4123444220 is about 64214.0500202253. The cubic root of 4123444220 is about 1603.5655146844.

Adding to 4123444220 its reverse (224443214), we get a palindrome (4347887434).

The spelling of 4123444220 in words is "four billion, one hundred twenty-three million, four hundred forty-four thousand, two hundred twenty".