9842138 has 8 divisors (see below), whose sum is σ = 14799540. Its totient is φ = 4908960.

The previous prime is 9842123. The next prime is 9842179. The reversal of 9842138 is 8312489.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9840769 + 1369 = 3137^2 + 37^2 .

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

It is a super-2 number, since 2×9842138² = 193735360822088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9842098 and 9842107.

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, 5003 + ... + 6686.

Almost surely, 2^9842138 is an apocalyptic number.

9842138 is a deficient number, since it is larger than the sum of its proper divisors (4957402).

9842138 is a wasteful number, since it uses less digits than its factorization.

9842138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12112.

The product of its digits is 13824, while the sum is 35.

The square root of 9842138 is about 3137.2181945156. The cubic root of 9842138 is about 214.3037727427.

The spelling of 9842138 in words is "nine million, eight hundred forty-two thousand, one hundred thirty-eight".