38842 has 4 divisors (see below), whose sum is σ = 58266. Its totient is φ = 19420.

The previous prime is 38839. The next prime is 38851. The reversal of 38842 is 24883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24883 = 149 ⋅167.

It can be written as a sum of positive squares in only one way, i.e., 22201 + 16641 = 149^2 + 129^2 .

It is an Ulam number.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9709 + ... + 9712.

2³⁸⁸⁴² is an apocalyptic number.

38842 is a deficient number, since it is larger than the sum of its proper divisors (19424).

38842 is a wasteful number, since it uses less digits than its factorization.

38842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19423.

The product of its digits is 1536, while the sum is 25.

The square root of 38842 is about 197.0837385479. The cubic root of 38842 is about 33.8662565998.

The spelling of 38842 in words is "thirty-eight thousand, eight hundred forty-two".