158723 has 8 divisors (see below), whose sum is σ = 169728. Its totient is φ = 148104.

The previous prime is 158699. The next prime is 158731. The reversal of 158723 is 327851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 158723 - 2¹⁶ = 93187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158692 and 158701.

It is not an unprimeable number, because it can be changed into a prime (158923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1490 + ... + 1592.

It is an arithmetic number, because the mean of its divisors is an integer number (21216).

2¹⁵⁸⁷²³ is an apocalyptic number.

158723 is a deficient number, since it is larger than the sum of its proper divisors (11005).

158723 is a wasteful number, since it uses less digits than its factorization.

158723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193.

The product of its digits is 1680, while the sum is 26.

The square root of 158723 is about 398.4005522085. The cubic root of 158723 is about 54.1435367387.

The spelling of 158723 in words is "one hundred fifty-eight thousand, seven hundred twenty-three".