143445 has 16 divisors (see below), whose sum is σ = 234432. Its totient is φ = 74880.

The previous prime is 143443. The next prime is 143461. The reversal of 143445 is 544341.

143445 = 3² + 4² + ... + 75².

It is not a de Polignac number, because 143445 - 2¹ = 143443 is a prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1030 + ... + 1160.

It is an arithmetic number, because the mean of its divisors is an integer number (14652).

2¹⁴³⁴⁴⁵ is an apocalyptic number.

143445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

143445 is the 219-th octagonal number.

It is an amenable number.

143445 is a deficient number, since it is larger than the sum of its proper divisors (90987).

143445 is a wasteful number, since it uses less digits than its factorization.

143445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212.

The product of its digits is 960, while the sum is 21.

The square root of 143445 is about 378.7413365346. The cubic root of 143445 is about 52.3474026930.

Adding to 143445 its reverse (544341), we get a palindrome (687786).

The spelling of 143445 in words is "one hundred forty-three thousand, four hundred forty-five".