405322 has 4 divisors (see below), whose sum is σ = 607986. Its totient is φ = 202660.

The previous prime is 405299. The next prime is 405323. The reversal of 405322 is 223504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 314721 + 90601 = 561^2 + 301^2 .

It is a junction number, because it is equal to n+sod(n) for n = 405296 and 405305.

It is not an unprimeable number, because it can be changed into a prime (405323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101329 + ... + 101332.

2⁴⁰⁵³²² is an apocalyptic number.

405322 is a deficient number, since it is larger than the sum of its proper divisors (202664).

405322 is a wasteful number, since it uses less digits than its factorization.

405322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202663.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 405322 is about 636.6490398956. The cubic root of 405322 is about 74.0059649441.

Adding to 405322 its reverse (223504), we get a palindrome (628826).

It can be divided in two parts, 405 and 322, that added together give a palindrome (727).

The spelling of 405322 in words is "four hundred five thousand, three hundred twenty-two".