210129124273 has 4 divisors (see below), whose sum is σ = 210724391268. Its totient is φ = 209533857280.

The previous prime is 210129124187. The next prime is 210129124321. The reversal of 210129124273 is 372421921012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84365268849 + 125763855424 = 290457^2 + 354632^2 .

It is a cyclic number.

It is not a de Polignac number, because 210129124273 - 2¹⁷ = 210128993201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210129124973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297632968 + ... + 297633673.

It is an arithmetic number, because the mean of its divisors is an integer number (52681097817).

Almost surely, 2^210129124273 is an apocalyptic number.

It is an amenable number.

210129124273 is a deficient number, since it is larger than the sum of its proper divisors (595266995).

210129124273 is an equidigital number, since it uses as much as digits as its factorization.

210129124273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595266994.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 210129124273 in words is "two hundred ten billion, one hundred twenty-nine million, one hundred twenty-four thousand, two hundred seventy-three".