405122 has 8 divisors (see below), whose sum is σ = 634176. Its totient is φ = 193732.

The previous prime is 405091. The next prime is 405143. The reversal of 405122 is 221504.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 405097 and 405106.

It is an unprimeable number.

405122 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4358 + ... + 4449.

It is an arithmetic number, because the mean of its divisors is an integer number (79272).

2⁴⁰⁵¹²² is an apocalyptic number.

405122 is a deficient number, since it is larger than the sum of its proper divisors (229054).

405122 is a wasteful number, since it uses less digits than its factorization.

405122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8832.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 405122 is about 636.4919481030. The cubic root of 405122 is about 73.9937905674.

Adding to 405122 its reverse (221504), we get a palindrome (626626).

The spelling of 405122 in words is "four hundred five thousand, one hundred twenty-two".