42648593 has 4 divisors (see below), whose sum is σ = 45929268. Its totient is φ = 39367920.

The previous prime is 42648587. The next prime is 42648629. The reversal of 42648593 is 39584624.

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 1982464 + 40666129 = 1408^2 + 6377^2 .

It is a cyclic number.

It is not a de Polignac number, because 42648593 - 2⁸ = 42648337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42648593.

It is not an unprimeable number, because it can be changed into a prime (42648523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640318 + ... + 1640343.

It is an arithmetic number, because the mean of its divisors is an integer number (11482317).

Almost surely, 2^42648593 is an apocalyptic number.

It is an amenable number.

42648593 is a deficient number, since it is larger than the sum of its proper divisors (3280675).

42648593 is a wasteful number, since it uses less digits than its factorization.

42648593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280674.

The product of its digits is 207360, while the sum is 41.

The square root of 42648593 is about 6530.5890239702. The cubic root of 42648593 is about 349.3828389194.

The spelling of 42648593 in words is "forty-two million, six hundred forty-eight thousand, five hundred ninety-three".