42187854 has 8 divisors (see below), whose sum is σ = 84375720. Its totient is φ = 14062616.

The previous prime is 42187843. The next prime is 42187877. The reversal of 42187854 is 45878124.

It is a happy number.

42187854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

42187854 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 3515649 + ... + 3515660.

It is an arithmetic number, because the mean of its divisors is an integer number (10546965).

Almost surely, 2^42187854 is an apocalyptic number.

42187854 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42187854 is a wasteful number, since it uses less digits than its factorization.

42187854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7031314.

The product of its digits is 71680, while the sum is 39.

The square root of 42187854 is about 6495.2177792588. The cubic root of 42187854 is about 348.1201362204.

The spelling of 42187854 in words is "forty-two million, one hundred eighty-seven thousand, eight hundred fifty-four".