121273 has 4 divisors (see below), whose sum is σ = 122148. Its totient is φ = 120400.

The previous prime is 121271. The next prime is 121283. The reversal of 121273 is 372121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 107584 + 13689 = 328^2 + 117^2 .

It is a cyclic number.

It is not a de Polignac number, because 121273 - 2¹ = 121271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121271) 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, 178 + ... + 523.

It is an arithmetic number, because the mean of its divisors is an integer number (30537).

2¹²¹²⁷³ is an apocalyptic number.

It is an amenable number.

121273 is a deficient number, since it is larger than the sum of its proper divisors (875).

121273 is an equidigital number, since it uses as much as digits as its factorization.

121273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874.

The product of its digits is 84, while the sum is 16.

The square root of 121273 is about 348.2427314389. The cubic root of 121273 is about 49.4980443400.

Adding to 121273 its reverse (372121), we get a palindrome (493394).

It can be divided in two parts, 121 and 273, that multiplied together give a palindrome (33033).

The spelling of 121273 in words is "one hundred twenty-one thousand, two hundred seventy-three", and thus it is an iban number.