143112420 has 144 divisors (see below), whose sum is σ = 491295168. Its totient is φ = 34680960.

The previous prime is 143112407. The next prime is 143112421. The reversal of 143112420 is 24211341.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 143112393 and 143112402.

It is not an unprimeable number, because it can be changed into a prime (143112421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52122 + ... + 54798.

It is an arithmetic number, because the mean of its divisors is an integer number (3411772).

Almost surely, 2^143112420 is an apocalyptic number.

143112420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143112420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245647584).

143112420 is an abundant number, since it is smaller than the sum of its proper divisors (348182748).

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

143112420 is a wasteful number, since it uses less digits than its factorization.

143112420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712 (or 2698 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 143112420 is about 11962.9603359704. The cubic root of 143112420 is about 523.0691523222.

Adding to 143112420 its reverse (24211341), we get a palindrome (167323761).

The spelling of 143112420 in words is "one hundred forty-three million, one hundred twelve thousand, four hundred twenty".