42158775 has 24 divisors (see below), whose sum is σ = 69967744. Its totient is φ = 22399200.

The previous prime is 42158737. The next prime is 42158789. The reversal of 42158775 is 57785124.

42158775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42158775 - 2¹⁷ = 42027703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 22110 + ... + 23940.

Almost surely, 2^42158775 is an apocalyptic number.

42158775 is a deficient number, since it is larger than the sum of its proper divisors (27808969).

42158775 is a wasteful number, since it uses less digits than its factorization.

42158775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151 (or 2146 counting only the distinct ones).

The product of its digits is 78400, while the sum is 39.

The square root of 42158775 is about 6492.9789003199. The cubic root of 42158775 is about 348.0401344252.

The spelling of 42158775 in words is "forty-two million, one hundred fifty-eight thousand, seven hundred seventy-five".