141985 has 8 divisors (see below), whose sum is σ = 173160. Its totient is φ = 111744.

The previous prime is 141971. The next prime is 141991. The reversal of 141985 is 589141.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6561 + 135424 = 81^2 + 368^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-141985 is a prime.

It is an Ulam number.

141985 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 171 + ... + 559.

It is an arithmetic number, because the mean of its divisors is an integer number (21645).

2¹⁴¹⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

141985 is a deficient number, since it is larger than the sum of its proper divisors (31175).

141985 is an equidigital number, since it uses as much as digits as its factorization.

141985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467.

The product of its digits is 1440, while the sum is 28.

The square root of 141985 is about 376.8089701692. The cubic root of 141985 is about 52.1691973898.

The spelling of 141985 in words is "one hundred forty-one thousand, nine hundred eighty-five".