4220252420 has 12 divisors (see below), whose sum is σ = 8862530124. Its totient is φ = 1688100960.

The previous prime is 4220252419. The next prime is 4220252423. The reversal of 4220252420 is 242520224.

It can be written as a sum of positive squares in 2 ways, for example, as 2583078976 + 1637173444 = 50824^2 + 40462^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4220252423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105506291 + ... + 105506330.

It is an arithmetic number, because the mean of its divisors is an integer number (738544177).

Almost surely, 2^4220252420 is an apocalyptic number.

It is an amenable number.

4220252420 is an abundant number, since it is smaller than the sum of its proper divisors (4642277704).

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

4220252420 is a wasteful number, since it uses less digits than its factorization.

4220252420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211012630 (or 211012628 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 4220252420 is about 64963.4698888537. The cubic root of 4220252420 is about 1616.0178090259.

Adding to 4220252420 its reverse (242520224), we get a palindrome (4462772644).

The spelling of 4220252420 in words is "four billion, two hundred twenty million, two hundred fifty-two thousand, four hundred twenty".