162123539 has 4 divisors (see below), whose sum is σ = 165573024. Its totient is φ = 158674056.

The previous prime is 162123487. The next prime is 162123541. The reversal of 162123539 is 935321261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162123539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162123239) 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, 1724672 + ... + 1724765.

It is an arithmetic number, because the mean of its divisors is an integer number (41393256).

Almost surely, 2^162123539 is an apocalyptic number.

162123539 is a deficient number, since it is larger than the sum of its proper divisors (3449485).

162123539 is an equidigital number, since it uses as much as digits as its factorization.

162123539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449484.

The product of its digits is 9720, while the sum is 32.

The square root of 162123539 is about 12732.7742067469. The cubic root of 162123539 is about 545.2747137891.

The spelling of 162123539 in words is "one hundred sixty-two million, one hundred twenty-three thousand, five hundred thirty-nine".