42188775 has 12 divisors (see below), whose sum is σ = 69752232. Its totient is φ = 22500640.

The previous prime is 42188767. The next prime is 42188779. The reversal of 42188775 is 57788124.

It is not a de Polignac number, because 42188775 - 2³ = 42188767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42188779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281184 + ... + 281333.

It is an arithmetic number, because the mean of its divisors is an integer number (5812686).

Almost surely, 2^42188775 is an apocalyptic number.

42188775 is a deficient number, since it is larger than the sum of its proper divisors (27563457).

42188775 is a wasteful number, since it uses less digits than its factorization.

42188775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562530 (or 562525 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 42188775 is about 6495.2886771875. The cubic root of 42188775 is about 348.1226694639.

The spelling of 42188775 in words is "forty-two million, one hundred eighty-eight thousand, seven hundred seventy-five".