42187774 has 8 divisors (see below), whose sum is σ = 64173168. Its totient is φ = 20796720.

The previous prime is 42187753. The next prime is 42187777. The reversal of 42187774 is 47778124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42187777) 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 3 ways as a sum of consecutive naturals, for example, 148407 + ... + 148690.

It is an arithmetic number, because the mean of its divisors is an integer number (8021646).

Almost surely, 2^42187774 is an apocalyptic number.

42187774 is a deficient number, since it is larger than the sum of its proper divisors (21985394).

42187774 is a wasteful number, since it uses less digits than its factorization.

42187774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297170.

The product of its digits is 87808, while the sum is 40.

The square root of 42187774 is about 6495.2116208789. The cubic root of 42187774 is about 348.1199161758.

The spelling of 42187774 in words is "forty-two million, one hundred eighty-seven thousand, seven hundred seventy-four".