158241 has 4 divisors (see below), whose sum is σ = 210992. Its totient is φ = 105492.

The previous prime is 158233. The next prime is 158243. The reversal of 158241 is 142851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 158241 - 2³ = 158233 is a prime.

It is a D-number.

It is a Duffinian number.

158241 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (158243) 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 3 ways as a sum of consecutive naturals, for example, 26371 + ... + 26376.

It is an arithmetic number, because the mean of its divisors is an integer number (52748).

2¹⁵⁸²⁴¹ is an apocalyptic number.

It is an amenable number.

158241 is a deficient number, since it is larger than the sum of its proper divisors (52751).

158241 is an equidigital number, since it uses as much as digits as its factorization.

158241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52750.

The product of its digits is 320, while the sum is 21.

The square root of 158241 is about 397.7951734247. The cubic root of 158241 is about 54.0886746075.

It can be divided in two parts, 15 and 8241, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 158241 in words is "one hundred fifty-eight thousand, two hundred forty-one".