4123242020 has 12 divisors (see below), whose sum is σ = 8658808284. Its totient is φ = 1649296800.

The previous prime is 4123241977. The next prime is 4123242029. The reversal of 4123242020 is 202423214.

It can be written as a sum of positive squares in 2 ways, for example, as 2810484196 + 1312757824 = 53014^2 + 36232^2 .

It is a super-2 number, since 2×4123242020² = 34002249510987360800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 206162101 = 4123242020 / (4 + 1 + 2 + 3 + 2 + 4 + 2 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 4123241983 and 4123242001.

It is not an unprimeable number, because it can be changed into a prime (4123242029) 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, 103081031 + ... + 103081070.

It is an arithmetic number, because the mean of its divisors is an integer number (721567357).

Almost surely, 2^4123242020 is an apocalyptic number.

It is an amenable number.

4123242020 is an abundant number, since it is smaller than the sum of its proper divisors (4535566264).

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

4123242020 is a wasteful number, since it uses less digits than its factorization.

4123242020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206162110 (or 206162108 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4123242020 is about 64212.4755791271. The cubic root of 4123242020 is about 1603.5393030815.

Adding to 4123242020 its reverse (202423214), we get a palindrome (4325665234).

The spelling of 4123242020 in words is "four billion, one hundred twenty-three million, two hundred forty-two thousand, twenty".