42404353666405 has 32 divisors (see below), whose sum is σ = 53016615388800. Its totient is φ = 32520134852352.

The previous prime is 42404353666379. The next prime is 42404353666421. The reversal of 42404353666405 is 50466635340424.

42404353666405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42404353666405 - 2²³ = 42404345277797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9501406 + ... + 13231984.

It is an arithmetic number, because the mean of its divisors is an integer number (1656769230900).

Almost surely, 2^{42404353666405} is an apocalyptic number.

It is an amenable number.

42404353666405 is a deficient number, since it is larger than the sum of its proper divisors (10612261722395).

42404353666405 is a wasteful number, since it uses less digits than its factorization.

42404353666405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3731173.

The product of its (nonzero) digits is 24883200, while the sum is 52.

The spelling of 42404353666405 in words is "forty-two trillion, four hundred four billion, three hundred fifty-three million, six hundred sixty-six thousand, four hundred five".