122729 has 8 divisors (see below), whose sum is σ = 131328. Its totient is φ = 114480.

The previous prime is 122719. The next prime is 122741. The reversal of 122729 is 927221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122729 - 2¹² = 118633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1094 + ... + 1200.

It is an arithmetic number, because the mean of its divisors is an integer number (16416).

2¹²²⁷²⁹ is an apocalyptic number.

It is an amenable number.

122729 is a deficient number, since it is larger than the sum of its proper divisors (8599).

122729 is a wasteful number, since it uses less digits than its factorization.

122729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175.

The product of its digits is 504, while the sum is 23.

The square root of 122729 is about 350.3269901107. The cubic root of 122729 is about 49.6953475073.

The spelling of 122729 in words is "one hundred twenty-two thousand, seven hundred twenty-nine".