141997 has 4 divisors (see below), whose sum is σ = 143100. Its totient is φ = 140896.

The previous prime is 141991. The next prime is 142007. The reversal of 141997 is 799141.

141997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 35721 + 106276 = 189^2 + 326^2 .

It is a cyclic number.

It is not a de Polignac number, because 141997 - 2¹⁵ = 109229 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328 + ... + 625.

It is an arithmetic number, because the mean of its divisors is an integer number (35775).

2¹⁴¹⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

141997 is a deficient number, since it is larger than the sum of its proper divisors (1103).

141997 is an equidigital number, since it uses as much as digits as its factorization.

141997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102.

The product of its digits is 2268, while the sum is 31.

The square root of 141997 is about 376.8248930206. The cubic root of 141997 is about 52.1706670585.

The spelling of 141997 in words is "one hundred forty-one thousand, nine hundred ninety-seven".