42605293 has 4 divisors (see below), whose sum is σ = 42618528. Its totient is φ = 42592060.

The previous prime is 42605291. The next prime is 42605323. The reversal of 42605293 is 39250624.

42605293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42605293 - 2¹ = 42605291 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42605291) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1680 + ... + 9382.

It is an arithmetic number, because the mean of its divisors is an integer number (10654632).

Almost surely, 2^42605293 is an apocalyptic number.

It is an amenable number.

42605293 is a deficient number, since it is larger than the sum of its proper divisors (13235).

42605293 is an equidigital number, since it uses as much as digits as its factorization.

42605293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13234.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 42605293 is about 6527.2730140542. The cubic root of 42605293 is about 349.2645591316.

The spelling of 42605293 in words is "forty-two million, six hundred five thousand, two hundred ninety-three".