121124543 has 4 divisors (see below), whose sum is σ = 122932440. Its totient is φ = 119316648.

The previous prime is 121124527. The next prime is 121124551. The reversal of 121124543 is 345421121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345421121 = 19 ⋅18180059.

It is a cyclic number.

It is not a de Polignac number, because 121124543 - 2⁴ = 121124527 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 (121120543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903848 + ... + 903981.

It is an arithmetic number, because the mean of its divisors is an integer number (30733110).

Almost surely, 2^121124543 is an apocalyptic number.

121124543 is a deficient number, since it is larger than the sum of its proper divisors (1807897).

121124543 is an equidigital number, since it uses as much as digits as its factorization.

121124543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807896.

The product of its digits is 960, while the sum is 23.

The square root of 121124543 is about 11005.6595895021. The cubic root of 121124543 is about 494.7783832624.

Adding to 121124543 its reverse (345421121), we get a palindrome (466545664).

The spelling of 121124543 in words is "one hundred twenty-one million, one hundred twenty-four thousand, five hundred forty-three".