122850129 has 4 divisors (see below), whose sum is σ = 163800176. Its totient is φ = 81900084.

The previous prime is 122850113. The next prime is 122850139. The reversal of 122850129 is 921058221.

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 not a de Polignac number, because 122850129 - 2⁴ = 122850113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122850096 and 122850105.

It is not an unprimeable number, because it can be changed into a prime (122850139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20475019 + ... + 20475024.

It is an arithmetic number, because the mean of its divisors is an integer number (40950044).

Almost surely, 2^122850129 is an apocalyptic number.

It is an amenable number.

122850129 is a deficient number, since it is larger than the sum of its proper divisors (40950047).

122850129 is an equidigital number, since it uses as much as digits as its factorization.

122850129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40950046.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 122850129 is about 11083.7777404638. Note that the first 4 decimals coincide. The cubic root of 122850129 is about 497.1169129040.

The spelling of 122850129 in words is "one hundred twenty-two million, eight hundred fifty thousand, one hundred twenty-nine".