244138 has 4 divisors (see below), whose sum is σ = 366210. Its totient is φ = 122068.

The previous prime is 244129. The next prime is 244141. The reversal of 244138 is 831442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831442 = 2 ⋅415721.

It can be written as a sum of positive squares in only one way, i.e., 243049 + 1089 = 493^2 + 33^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

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 as a sum of consecutive naturals, namely, 61033 + ... + 61036.

2²⁴⁴¹³⁸ is an apocalyptic number.

244138 is a deficient number, since it is larger than the sum of its proper divisors (122072).

244138 is a wasteful number, since it uses less digits than its factorization.

244138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122071.

The product of its digits is 768, while the sum is 22.

The square root of 244138 is about 494.1032280809. The cubic root of 244138 is about 62.4997759992.

The spelling of 244138 in words is "two hundred forty-four thousand, one hundred thirty-eight".