161241 has 8 divisors (see below), whose sum is σ = 218304. Its totient is φ = 105840.

The previous prime is 161237. The next prime is 161263. The reversal of 161241 is 142161.

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

It is not a de Polignac number, because 161241 - 2² = 161237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161241.

It is not an unprimeable number, because it can be changed into a prime (161201) 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 7 ways as a sum of consecutive naturals, for example, 166 + ... + 591.

It is an arithmetic number, because the mean of its divisors is an integer number (27288).

2¹⁶¹²⁴¹ is an apocalyptic number.

It is an amenable number.

161241 is a deficient number, since it is larger than the sum of its proper divisors (57063).

161241 is an equidigital number, since it uses as much as digits as its factorization.

161241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831.

The product of its digits is 48, while the sum is 15.

The square root of 161241 is about 401.5482536383. The cubic root of 161241 is about 54.4283490145.

It can be divided in two parts, 1612 and 41, that added together give a triangular number (1653 = T₅₇).

The spelling of 161241 in words is "one hundred sixty-one thousand, two hundred forty-one".