4142221220 has 48 divisors (see below), whose sum is σ = 8894645760. Its totient is φ = 1619968896.

The previous prime is 4142221219. The next prime is 4142221231. The reversal of 4142221220 is 221222414.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4142221192 and 4142221201.

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, 150014 + ... + 175466.

It is an arithmetic number, because the mean of its divisors is an integer number (185305120).

Almost surely, 2^4142221220 is an apocalyptic number.

It is an amenable number.

4142221220 is an abundant number, since it is smaller than the sum of its proper divisors (4752424540).

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

4142221220 is a wasteful number, since it uses less digits than its factorization.

4142221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25644 (or 25642 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 4142221220 is about 64360.0902733985. The cubic root of 4142221220 is about 1605.9958907623.

Adding to 4142221220 its reverse (221222414), we get a palindrome (4363443634).

The spelling of 4142221220 in words is "four billion, one hundred forty-two million, two hundred twenty-one thousand, two hundred twenty".