42138082 has 16 divisors (see below), whose sum is σ = 73228032. Its totient is φ = 17811360.

The previous prime is 42138077. The next prime is 42138097. The reversal of 42138082 is 28083124.

42138082 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42138082.

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 7 ways as a sum of consecutive naturals, for example, 19594 + ... + 21637.

It is an arithmetic number, because the mean of its divisors is an integer number (4576752).

Almost surely, 2^42138082 is an apocalyptic number.

42138082 is a deficient number, since it is larger than the sum of its proper divisors (31089950).

42138082 is a wasteful number, since it uses less digits than its factorization.

42138082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41313.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 42138082 is about 6491.3852142667. The cubic root of 42138082 is about 347.9831816860.

It can be divided in two parts, 421 and 38082, that added together give a triangular number (38503 = T₂₇₇).

The spelling of 42138082 in words is "forty-two million, one hundred thirty-eight thousand, eighty-two".