42868138 has 8 divisors (see below), whose sum is σ = 64334880. Its totient is φ = 21423180.

The previous prime is 42868121. The next prime is 42868171. The reversal of 42868138 is 83186824.

42868138 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.

It is a super-3 number, since 3×42868138³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42868138.

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, 1003 + ... + 9313.

It is an arithmetic number, because the mean of its divisors is an integer number (8041860).

Almost surely, 2^42868138 is an apocalyptic number.

42868138 is a deficient number, since it is larger than the sum of its proper divisors (21466742).

42868138 is a wasteful number, since it uses less digits than its factorization.

42868138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10892.

The product of its digits is 73728, while the sum is 40.

The square root of 42868138 is about 6547.3764211324. The cubic root of 42868138 is about 349.9813268949.

The spelling of 42868138 in words is "forty-two million, eight hundred sixty-eight thousand, one hundred thirty-eight".