268000129 has 4 divisors (see below), whose sum is σ = 270602176. Its totient is φ = 265398084.

The previous prime is 268000081. The next prime is 268000141. The reversal of 268000129 is 921000862.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 921000862 = 2 ⋅460500431.

It is a cyclic number.

It is not a de Polignac number, because 268000129 - 2⁷ = 268000001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268000097 and 268000106.

It is not an unprimeable number, because it can be changed into a prime (268000429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1300869 + ... + 1301074.

It is an arithmetic number, because the mean of its divisors is an integer number (67650544).

Almost surely, 2^268000129 is an apocalyptic number.

It is an amenable number.

268000129 is a deficient number, since it is larger than the sum of its proper divisors (2602047).

268000129 is a wasteful number, since it uses less digits than its factorization.

268000129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602046.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 268000129 is about 16370.7094837090. The cubic root of 268000129 is about 644.7306761723.

The spelling of 268000129 in words is "two hundred sixty-eight million, one hundred twenty-nine", and thus it is an aban number.