197129 has 4 divisors (see below), whose sum is σ = 203520. Its totient is φ = 190740.

The previous prime is 197123. The next prime is 197137. The reversal of 197129 is 921791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 197129 - 2⁸ = 196873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (197123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3149 + ... + 3210.

It is an arithmetic number, because the mean of its divisors is an integer number (50880).

2¹⁹⁷¹²⁹ is an apocalyptic number.

It is an amenable number.

197129 is a deficient number, since it is larger than the sum of its proper divisors (6391).

197129 is an equidigital number, since it uses as much as digits as its factorization.

197129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6390.

The product of its digits is 1134, while the sum is 29.

The square root of 197129 is about 443.9921170471. The cubic root of 197129 is about 58.1991765057.

The spelling of 197129 in words is "one hundred ninety-seven thousand, one hundred twenty-nine".