138384042 has 8 divisors (see below), whose sum is σ = 276768096. Its totient is φ = 46128012.

The previous prime is 138384023. The next prime is 138384047. The reversal of 138384042 is 240483831.

138384042 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.

138384042 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 138383994 and 138384012.

It is not an unprimeable number, because it can be changed into a prime (138384047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11531998 + ... + 11532009.

It is an arithmetic number, because the mean of its divisors is an integer number (34596012).

Almost surely, 2^138384042 is an apocalyptic number.

138384042 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.

138384042 is a wasteful number, since it uses less digits than its factorization.

138384042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23064012.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 138384042 is about 11763.6746809830. The cubic root of 138384042 is about 517.2438518573.

The spelling of 138384042 in words is "one hundred thirty-eight million, three hundred eighty-four thousand, forty-two".