42005393 has 8 divisors (see below), whose sum is σ = 42943680. Its totient is φ = 41075280.

The previous prime is 42005389. The next prime is 42005399. The reversal of 42005393 is 39350024.

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

It is a cyclic number.

It is not a de Polignac number, because 42005393 - 2² = 42005389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42005399) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 8996 + ... + 12842.

It is an arithmetic number, because the mean of its divisors is an integer number (5367960).

Almost surely, 2^42005393 is an apocalyptic number.

It is an amenable number.

42005393 is a deficient number, since it is larger than the sum of its proper divisors (938287).

42005393 is a wasteful number, since it uses less digits than its factorization.

42005393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 42005393 is about 6481.1567640353. The cubic root of 42005393 is about 347.6175417977.

The spelling of 42005393 in words is "forty-two million, five thousand, three hundred ninety-three".