406008242 has 4 divisors (see below), whose sum is σ = 609012366. Its totient is φ = 203004120.

The previous prime is 406008233. The next prime is 406008269. The reversal of 406008242 is 242800604.

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., 301334881 + 104673361 = 17359^2 + 10231^2 .

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 as a sum of consecutive naturals, namely, 101502059 + ... + 101502062.

Almost surely, 2^406008242 is an apocalyptic number.

406008242 is a deficient number, since it is larger than the sum of its proper divisors (203004124).

406008242 is a wasteful number, since it uses less digits than its factorization.

406008242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203004123.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 406008242 is about 20149.6462003679. The cubic root of 406008242 is about 740.4770736675.

Adding to 406008242 its reverse (242800604), we get a palindrome (648808846).

The spelling of 406008242 in words is "four hundred six million, eight thousand, two hundred forty-two".