42188593 has 2 divisors, whose sum is σ = 42188594. Its totient is φ = 42188592.

The previous prime is 42188567. The next prime is 42188617. The reversal of 42188593 is 39588124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26132544 + 16056049 = 5112^2 + 4007^2 .

It is a cyclic number.

It is not a de Polignac number, because 42188593 - 2²⁵ = 8634161 is a prime.

It is not a weakly prime, because it can be changed into another prime (42188513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21094296 + 21094297.

It is an arithmetic number, because the mean of its divisors is an integer number (21094297).

Almost surely, 2^42188593 is an apocalyptic number.

It is an amenable number.

42188593 is a deficient number, since it is larger than the sum of its proper divisors (1).

42188593 is an equidigital number, since it uses as much as digits as its factorization.

42188593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 40.

The square root of 42188593 is about 6495.2746670176. The cubic root of 42188593 is about 348.1221688693.

The spelling of 42188593 in words is "forty-two million, one hundred eighty-eight thousand, five hundred ninety-three".