143220 has 96 divisors (see below), whose sum is σ = 516096. Its totient is φ = 28800.

The previous prime is 143197. The next prime is 143239. The reversal of 143220 is 22341.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 143196 and 143205.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4605 + ... + 4635.

It is an arithmetic number, because the mean of its divisors is an integer number (5376).

2¹⁴³²²⁰ is an apocalyptic number.

143220 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 143220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258048).

143220 is an abundant number, since it is smaller than the sum of its proper divisors (372876).

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

143220 is a wasteful number, since it uses less digits than its factorization.

143220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 143220 is about 378.4441834670. Note that the first 3 decimals coincide. The cubic root of 143220 is about 52.3200186105.

143220 divided by its sum of digits (12) gives a triangular number (11935 = T₁₅₄).

Adding to 143220 its reverse (22341), we get a palindrome (165561).

It can be divided in two parts, 143 and 220, that added together give a palindrome (363).

The spelling of 143220 in words is "one hundred forty-three thousand, two hundred twenty", and thus it is an iban number.