405423234 has 12 divisors (see below), whose sum is σ = 878417046. Its totient is φ = 135141072.

The previous prime is 405423233. The next prime is 405423247. The reversal of 405423234 is 432324504.

405423234 is a `hidden beast` number, since 4 + 0 + 5 + 423 + 234 = 666.

It can be written as a sum of positive squares in only one way, i.e., 401000625 + 4422609 = 20025^2 + 2103^2 .

It is a junction number, because it is equal to n+sod(n) for n = 405423198 and 405423207.

It is not an unprimeable number, because it can be changed into a prime (405423233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11261739 + ... + 11261774.

Almost surely, 2^405423234 is an apocalyptic number.

405423234 is an abundant number, since it is smaller than the sum of its proper divisors (472993812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405423234 is a wasteful number, since it uses less digits than its factorization.

405423234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22523521 (or 22523518 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 405423234 is about 20135.1243850144. The cubic root of 405423234 is about 740.1212572175.

Adding to 405423234 its reverse (432324504), we get a palindrome (837747738).

The spelling of 405423234 in words is "four hundred five million, four hundred twenty-three thousand, two hundred thirty-four".