121741 has 4 divisors (see below), whose sum is σ = 124092. Its totient is φ = 119392.

The previous prime is 121727. The next prime is 121763. The reversal of 121741 is 147121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 147121 = 13 ⋅11317.

It can be written as a sum of positive squares in 2 ways, for example, as 72900 + 48841 = 270^2 + 221^2 .

It is a cyclic number.

It is not a de Polignac number, because 121741 - 2⁹ = 121229 is a prime.

It is a Duffinian number.

121741 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121711) 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 3 ways as a sum of consecutive naturals, for example, 1096 + ... + 1201.

It is an arithmetic number, because the mean of its divisors is an integer number (31023).

2¹²¹⁷⁴¹ is an apocalyptic number.

It is an amenable number.

121741 is a deficient number, since it is larger than the sum of its proper divisors (2351).

121741 is an equidigital number, since it uses as much as digits as its factorization.

121741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350.

The product of its digits is 56, while the sum is 16.

The square root of 121741 is about 348.9140295259. The cubic root of 121741 is about 49.5616346142.

Adding to 121741 its reverse (147121), we get a palindrome (268862).

The spelling of 121741 in words is "one hundred twenty-one thousand, seven hundred forty-one", and thus it is an iban number.