12143432020 has 12 divisors (see below), whose sum is σ = 25501207284. Its totient is φ = 4857372800.

The previous prime is 12143432009. The next prime is 12143432053. The reversal of 12143432020 is 2023434121.

It can be written as a sum of positive squares in 2 ways, for example, as 4845830544 + 7297601476 = 69612^2 + 85426^2 .

It is a super-2 number, since 2×12143432020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12143431982 and 12143432000.

It is a congruent number.

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, 303585781 + ... + 303585820.

It is an arithmetic number, because the mean of its divisors is an integer number (2125100607).

Almost surely, 2^12143432020 is an apocalyptic number.

12143432020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12143432020 is an abundant number, since it is smaller than the sum of its proper divisors (13357775264).

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

12143432020 is a wasteful number, since it uses less digits than its factorization.

12143432020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607171610 (or 607171608 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12143432020 its reverse (2023434121), we get a palindrome (14166866141).

The spelling of 12143432020 in words is "twelve billion, one hundred forty-three million, four hundred thirty-two thousand, twenty".