2143112420 has 48 divisors (see below), whose sum is σ = 4530517488. Its totient is φ = 851558400.

The previous prime is 2143112407. The next prime is 2143112431. The reversal of 2143112420 is 242113412.

It can be written as a sum of positive squares in 8 ways, for example, as 168376576 + 1974735844 = 12976^2 + 44438^2 .

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 = 2143112392 and 2143112401.

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, 2830682 + ... + 2831438.

It is an arithmetic number, because the mean of its divisors is an integer number (94385781).

Almost surely, 2^2143112420 is an apocalyptic number.

2143112420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143112420 is an abundant number, since it is smaller than the sum of its proper divisors (2387405068).

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

2143112420 is a wasteful number, since it uses less digits than its factorization.

2143112420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2143112420 is about 46293.7622147952. The cubic root of 2143112420 is about 1289.2831824723.

Adding to 2143112420 its reverse (242113412), we get a palindrome (2385225832).

The spelling of 2143112420 in words is "two billion, one hundred forty-three million, one hundred twelve thousand, four hundred twenty".