8242138 has 8 divisors (see below), whose sum is σ = 12532788. Its totient is φ = 4064544.

The previous prime is 8242121. The next prime is 8242141. The reversal of 8242138 is 8312428.

It can be written as a sum of positive squares in 2 ways, for example, as 8196769 + 45369 = 2863^2 + 213^2 .

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

It is a super-2 number, since 2×8242138² = 135865677622088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28081 + ... + 28372.

Almost surely, 2^8242138 is an apocalyptic number.

8242138 is a deficient number, since it is larger than the sum of its proper divisors (4290650).

8242138 is a wasteful number, since it uses less digits than its factorization.

8242138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56528.

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

The square root of 8242138 is about 2870.9123985242. The cubic root of 8242138 is about 201.9977943098.

The spelling of 8242138 in words is "eight million, two hundred forty-two thousand, one hundred thirty-eight".