194139 has 24 divisors (see below), whose sum is σ = 320112. Its totient is φ = 112320.

The previous prime is 194119. The next prime is 194141. The reversal of 194139 is 931491.

It is not a de Polignac number, because 194139 - 2⁸ = 193883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3637 + ... + 3689.

It is an arithmetic number, because the mean of its divisors is an integer number (13338).

2¹⁹⁴¹³⁹ is an apocalyptic number.

194139 is a deficient number, since it is larger than the sum of its proper divisors (125973).

194139 is a wasteful number, since it uses less digits than its factorization.

194139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 104 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 194139 is about 440.6120742785. The cubic root of 194139 is about 57.9034262874.

It can be divided in two parts, 194 and 139, that added together give a palindrome (333).

The spelling of 194139 in words is "one hundred ninety-four thousand, one hundred thirty-nine".