121194543 has 8 divisors (see below), whose sum is σ = 162430768. Its totient is φ = 80377344.

The previous prime is 121194503. The next prime is 121194551. The reversal of 121194543 is 345491121.

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

It is not a de Polignac number, because 121194543 - 2⁸ = 121194287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121194543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121194503) 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, 104080 + ... + 105237.

It is an arithmetic number, because the mean of its divisors is an integer number (20303846).

Almost surely, 2^121194543 is an apocalyptic number.

121194543 is a deficient number, since it is larger than the sum of its proper divisors (41236225).

121194543 is a wasteful number, since it uses less digits than its factorization.

121194543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209513.

The product of its digits is 4320, while the sum is 30.

The square root of 121194543 is about 11008.8393121164. The cubic root of 121194543 is about 494.8736786120.

The spelling of 121194543 in words is "one hundred twenty-one million, one hundred ninety-four thousand, five hundred forty-three".