158458 has 4 divisors (see below), whose sum is σ = 237690. Its totient is φ = 79228.

The previous prime is 158449. The next prime is 158489. The reversal of 158458 is 854851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 854851 = 59 ⋅14489.

It can be written as a sum of positive squares in only one way, i.e., 106929 + 51529 = 327^2 + 227^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 39613 + ... + 39616.

2¹⁵⁸⁴⁵⁸ is an apocalyptic number.

158458 is a deficient number, since it is larger than the sum of its proper divisors (79232).

158458 is an equidigital number, since it uses as much as digits as its factorization.

158458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79231.

The product of its digits is 6400, while the sum is 31.

The square root of 158458 is about 398.0678334154. The cubic root of 158458 is about 54.1133877166.

It can be divided in two parts, 158 and 458, that added together give a palindrome (616).

The spelling of 158458 in words is "one hundred fifty-eight thousand, four hundred fifty-eight".