162139 has 4 divisors (see below), whose sum is σ = 167760. Its totient is φ = 156520.

The previous prime is 162119. The next prime is 162143. The reversal of 162139 is 931261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931261 = 73 ⋅12757.

It is a cyclic number.

It is not a de Polignac number, because 162139 - 2⁷ = 162011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162109) 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, 2767 + ... + 2824.

It is an arithmetic number, because the mean of its divisors is an integer number (41940).

2¹⁶²¹³⁹ is an apocalyptic number.

162139 is a deficient number, since it is larger than the sum of its proper divisors (5621).

162139 is an equidigital number, since it uses as much as digits as its factorization.

162139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5620.

The product of its digits is 324, while the sum is 22.

The square root of 162139 is about 402.6648730644. The cubic root of 162139 is about 54.5292046712.

The spelling of 162139 in words is "one hundred sixty-two thousand, one hundred thirty-nine".