405423212 has 6 divisors (see below), whose sum is σ = 709490628. Its totient is φ = 202711604.

The previous prime is 405423209. The next prime is 405423229. The reversal of 405423212 is 212324504.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50677898 + ... + 50677905.

It is an arithmetic number, because the mean of its divisors is an integer number (118248438).

Almost surely, 2^405423212 is an apocalyptic number.

It is an amenable number.

405423212 is a deficient number, since it is larger than the sum of its proper divisors (304067416).

405423212 is a wasteful number, since it uses less digits than its factorization.

405423212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101355807 (or 101355805 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 405423212 is about 20135.1238387053. The cubic root of 405423212 is about 740.1212438301.

Adding to 405423212 its reverse (212324504), we get a palindrome (617747716).

The spelling of 405423212 in words is "four hundred five million, four hundred twenty-three thousand, two hundred twelve".