406129 has 4 divisors (see below), whose sum is σ = 410176. Its totient is φ = 402084.

The previous prime is 406123. The next prime is 406169. The reversal of 406129 is 921604.

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 406129 - 2¹¹ = 404081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1869 + ... + 2074.

It is an arithmetic number, because the mean of its divisors is an integer number (102544).

2⁴⁰⁶¹²⁹ is an apocalyptic number.

It is an amenable number.

406129 is a deficient number, since it is larger than the sum of its proper divisors (4047).

406129 is a wasteful number, since it uses less digits than its factorization.

406129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 406129 is about 637.2825119207. The cubic root of 406129 is about 74.0550479129.

It can be divided in two parts, 406 and 129, that added together give a palindrome (535).

The spelling of 406129 in words is "four hundred six thousand, one hundred twenty-nine".