4122545220 has 240 divisors, whose sum is σ = 13831171200. Its totient is φ = 1024275456.

The previous prime is 4122545209. The next prime is 4122545221. The reversal of 4122545220 is 225452214.

4122545220 is a `hidden beast` number, since 412 + 25 + 4 + 5 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4122545221) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2946081 + ... + 2947479.

It is an arithmetic number, because the mean of its divisors is an integer number (57629880).

Almost surely, 2^4122545220 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 4122545220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6915585600).

4122545220 is an abundant number, since it is smaller than the sum of its proper divisors (9708625980).

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

4122545220 is a wasteful number, since it uses less digits than its factorization.

4122545220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 4122545220 is about 64207.0496129514. The cubic root of 4122545220 is about 1603.4489688956.

Adding to 4122545220 its reverse (225452214), we get a palindrome (4347997434).

The spelling of 4122545220 in words is "four billion, one hundred twenty-two million, five hundred forty-five thousand, two hundred twenty".