2143422020 has 12 divisors (see below), whose sum is σ = 4501186284. Its totient is φ = 857368800.

The previous prime is 2143422019. The next prime is 2143422041. The reversal of 2143422020 is 202243412.

It can be written as a sum of positive squares in 2 ways, for example, as 1124663296 + 1018758724 = 33536^2 + 31918^2 .

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: 107171101 = 2143422020 / (2 + 1 + 4 + 3 + 4 + 2 + 2 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 2143421983 and 2143422001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53585531 + ... + 53585570.

It is an arithmetic number, because the mean of its divisors is an integer number (375098857).

Almost surely, 2^2143422020 is an apocalyptic number.

2143422020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143422020 is an abundant number, since it is smaller than the sum of its proper divisors (2357764264).

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

2143422020 is a wasteful number, since it uses less digits than its factorization.

2143422020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107171110 (or 107171108 counting only the distinct ones).

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

The square root of 2143422020 is about 46297.1059570682. The cubic root of 2143422020 is about 1289.3452639649.

Adding to 2143422020 its reverse (202243412), we get a palindrome (2345665432).

The spelling of 2143422020 in words is "two billion, one hundred forty-three million, four hundred twenty-two thousand, twenty".