405683242 has 8 divisors (see below), whose sum is σ = 622676736. Its totient is φ = 198124332.

The previous prime is 405683237. The next prime is 405683251. The reversal of 405683242 is 242386504.

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

It is a junction number, because it is equal to n+sod(n) for n = 405683198 and 405683207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2358538 + ... + 2358709.

It is an arithmetic number, because the mean of its divisors is an integer number (77834592).

Almost surely, 2^405683242 is an apocalyptic number.

405683242 is a deficient number, since it is larger than the sum of its proper divisors (216993494).

405683242 is a wasteful number, since it uses less digits than its factorization.

405683242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4717292.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 405683242 is about 20141.5799280990. The cubic root of 405683242 is about 740.2794427941.

The spelling of 405683242 in words is "four hundred five million, six hundred eighty-three thousand, two hundred forty-two".