4000124220 has 48 divisors (see below), whose sum is σ = 11207820960. Its totient is φ = 1065988096.

The previous prime is 4000124213. The next prime is 4000124237. The reversal of 4000124220 is 224210004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 4000124220.

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, 71716 + ... + 114644.

It is an arithmetic number, because the mean of its divisors is an integer number (233496270).

Almost surely, 2^4000124220 is an apocalyptic number.

It is an amenable number.

4000124220 is an abundant number, since it is smaller than the sum of its proper divisors (7207696740).

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

4000124220 is a wasteful number, since it uses less digits than its factorization.

4000124220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44494 (or 44492 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4000124220 is about 63246.5352410707. The cubic root of 4000124220 is about 1587.4174840447.

Adding to 4000124220 its reverse (224210004), we get a palindrome (4224334224).

The spelling of 4000124220 in words is "four billion, one hundred twenty-four thousand, two hundred twenty".