405243066 has 16 divisors (see below), whose sum is σ = 810683424. Its totient is φ = 135048144.

The previous prime is 405243043. The next prime is 405243107. The reversal of 405243066 is 660342504.

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 7 ways as a sum of consecutive naturals, for example, 44125 + ... + 52511.

It is an arithmetic number, because the mean of its divisors is an integer number (50667714).

Almost surely, 2^405243066 is an apocalyptic number.

405243066 is an abundant number, since it is smaller than the sum of its proper divisors (405440358).

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

405243066 is a wasteful number, since it uses less digits than its factorization.

405243066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16445.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 405243066 is about 20130.6499149928. The cubic root of 405243066 is about 740.0116056130.

The spelling of 405243066 in words is "four hundred five million, two hundred forty-three thousand, sixty-six".