190139 has 4 divisors (see below), whose sum is σ = 192024. Its totient is φ = 188256.

The previous prime is 190129. The next prime is 190147. The reversal of 190139 is 931091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931091 = 7 ⋅133013.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782 + ... + 995.

It is an arithmetic number, because the mean of its divisors is an integer number (48006).

2¹⁹⁰¹³⁹ is an apocalyptic number.

190139 is a deficient number, since it is larger than the sum of its proper divisors (1885).

190139 is a wasteful number, since it uses less digits than its factorization.

190139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 190139 is about 436.0493091383. The cubic root of 190139 is about 57.5029866124.

The spelling of 190139 in words is "one hundred ninety thousand, one hundred thirty-nine".