143172 has 36 divisors (see below), whose sum is σ = 374556. Its totient is φ = 46080.

The previous prime is 143159. The next prime is 143177. The reversal of 143172 is 271341.

It can be written as a sum of positive squares in 2 ways, for example, as 30276 + 112896 = 174^2 + 336^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143172.

It is not an unprimeable number, because it can be changed into a prime (143177) by changing a digit.

143172 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1428 + ... + 1524.

2¹⁴³¹⁷² is an apocalyptic number.

143172 is a gapful number since it is divisible by the number (12) 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 143172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187278).

143172 is an abundant number, since it is smaller than the sum of its proper divisors (231384).

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

143172 is a wasteful number, since it uses less digits than its factorization.

143172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 143 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 143172 is about 378.3807606103. The cubic root of 143172 is about 52.3141729616.

The spelling of 143172 in words is "one hundred forty-three thousand, one hundred seventy-two", and thus it is an iban number.