143512020 has 96 divisors (see below), whose sum is σ = 460938240. Its totient is φ = 37031040.

The previous prime is 143512007. The next prime is 143512037. The reversal of 143512020 is 20215341.

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 = 143511984 and 143512002.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 12454 + ... + 21026.

It is an arithmetic number, because the mean of its divisors is an integer number (4801440).

Almost surely, 2^143512020 is an apocalyptic number.

143512020 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 143512020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230469120).

143512020 is an abundant number, since it is smaller than the sum of its proper divisors (317426220).

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

143512020 is a wasteful number, since it uses less digits than its factorization.

143512020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8622 (or 8614 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 143512020 is about 11979.6502453118. The cubic root of 143512020 is about 523.5555396284. Note that the first 4 decimals are identical.

Adding to 143512020 its reverse (20215341), we get a palindrome (163727361).

The spelling of 143512020 in words is "one hundred forty-three million, five hundred twelve thousand, twenty".