121443 has 8 divisors (see below), whose sum is σ = 185088. Its totient is φ = 69384.

The previous prime is 121441. The next prime is 121447. The reversal of 121443 is 344121.

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

It is not a de Polignac number, because 121443 - 2¹ = 121441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2871 + ... + 2912.

It is an arithmetic number, because the mean of its divisors is an integer number (23136).

2¹²¹⁴⁴³ is an apocalyptic number.

121443 is a deficient number, since it is larger than the sum of its proper divisors (63645).

121443 is an equidigital number, since it uses as much as digits as its factorization.

121443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5793.

The product of its digits is 96, while the sum is 15.

The square root of 121443 is about 348.4867285852. The cubic root of 121443 is about 49.5211622605.

Adding to 121443 its reverse (344121), we get a palindrome (465564).

The spelling of 121443 in words is "one hundred twenty-one thousand, four hundred forty-three", and thus it is an iban number.