121441543 has 4 divisors (see below), whose sum is σ = 121471000. Its totient is φ = 121412088.

The previous prime is 121441513. The next prime is 121441547. The reversal of 121441543 is 345144121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345144121 = 7 ⋅49306303.

It is a cyclic number.

It is not a de Polignac number, because 121441543 - 2²¹ = 119344391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121441547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7293 + ... + 17206.

It is an arithmetic number, because the mean of its divisors is an integer number (30367750).

Almost surely, 2^121441543 is an apocalyptic number.

121441543 is a deficient number, since it is larger than the sum of its proper divisors (29457).

121441543 is an equidigital number, since it uses as much as digits as its factorization.

121441543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29456.

The product of its digits is 1920, while the sum is 25.

The square root of 121441543 is about 11020.0518601321. The cubic root of 121441543 is about 495.2096421797.

Adding to 121441543 its reverse (345144121), we get a palindrome (466585664).

The spelling of 121441543 in words is "one hundred twenty-one million, four hundred forty-one thousand, five hundred forty-three".