121004543 has 8 divisors (see below), whose sum is σ = 132316416. Its totient is φ = 109744600.

The previous prime is 121004447. The next prime is 121004551. The reversal of 121004543 is 345400121.

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

It is a cyclic number.

It is not a de Polignac number, because 121004543 - 2¹⁴ = 120988159 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 (121004593) 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, 8021 + ... + 17502.

It is an arithmetic number, because the mean of its divisors is an integer number (16539552).

Almost surely, 2^121004543 is an apocalyptic number.

121004543 is a deficient number, since it is larger than the sum of its proper divisors (11311873).

121004543 is a wasteful number, since it uses less digits than its factorization.

121004543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25965.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 121004543 is about 11000.2064980618. The cubic root of 121004543 is about 494.6149343508.

Adding to 121004543 its reverse (345400121), we get a palindrome (466404664).

The spelling of 121004543 in words is "one hundred twenty-one million, four thousand, five hundred forty-three".