42993305 has 4 divisors (see below), whose sum is σ = 51591972. Its totient is φ = 34394640.

The previous prime is 42993299. The next prime is 42993317. The reversal of 42993305 is 50339924.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9388096 + 33605209 = 3064^2 + 5797^2 .

It is not a de Polignac number, because 42993305 - 2¹⁶ = 42927769 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4299326 + ... + 4299335.

It is an arithmetic number, because the mean of its divisors is an integer number (12897993).

Almost surely, 2^42993305 is an apocalyptic number.

It is an amenable number.

42993305 is a deficient number, since it is larger than the sum of its proper divisors (8598667).

42993305 is an equidigital number, since it uses as much as digits as its factorization.

42993305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8598666.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 42993305 is about 6556.9280154658. The cubic root of 42993305 is about 350.3216227306.

The spelling of 42993305 in words is "forty-two million, nine hundred ninety-three thousand, three hundred five".