192139 has 4 divisors (see below), whose sum is σ = 193120. Its totient is φ = 191160.

The previous prime is 192133. The next prime is 192149. The reversal of 192139 is 931291.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 931291 = 127 ⋅7333.

It is a cyclic number.

It is not a de Polignac number, because 192139 - 2⁹ = 191627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (192133) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 84 + ... + 625.

It is an arithmetic number, because the mean of its divisors is an integer number (48280).

2¹⁹²¹³⁹ is an apocalyptic number.

192139 is a deficient number, since it is larger than the sum of its proper divisors (981).

192139 is an equidigital number, since it uses as much as digits as its factorization.

192139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980.

The product of its digits is 486, while the sum is 25.

The square root of 192139 is about 438.3366286315. The cubic root of 192139 is about 57.7039011687.

The spelling of 192139 in words is "one hundred ninety-two thousand, one hundred thirty-nine".