142884138 has 8 divisors (see below), whose sum is σ = 285768288. Its totient is φ = 47628044.

The previous prime is 142884109. The next prime is 142884233. The reversal of 142884138 is 831488241.

It is a happy number.

142884138 is digitally balanced in base 3, 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.

142884138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 142884096 and 142884105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11907006 + ... + 11907017.

It is an arithmetic number, because the mean of its divisors is an integer number (35721036).

Almost surely, 2^142884138 is an apocalyptic number.

142884138 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.

142884138 is a wasteful number, since it uses less digits than its factorization.

142884138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23814028.

The product of its digits is 49152, while the sum is 39.

The square root of 142884138 is about 11953.4153278467. The cubic root of 142884138 is about 522.7908843276.

The spelling of 142884138 in words is "one hundred forty-two million, eight hundred eighty-four thousand, one hundred thirty-eight".