121504134243 has 8 divisors (see below), whose sum is σ = 162700815888. Its totient is φ = 80655104384.

The previous prime is 121504134223. The next prime is 121504134259. The reversal of 121504134243 is 342431405121.

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 121504134243 - 2¹⁷ = 121504003171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121504134243.

It is not an unprimeable number, because it can be changed into a prime (121504134223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86912130 + ... + 86913527.

It is an arithmetic number, because the mean of its divisors is an integer number (20337601986).

Almost surely, 2^121504134243 is an apocalyptic number.

121504134243 is a deficient number, since it is larger than the sum of its proper divisors (41196681645).

121504134243 is a wasteful number, since it uses less digits than its factorization.

121504134243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173825893.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 121504134243 its reverse (342431405121), we get a palindrome (463935539364).

The spelling of 121504134243 in words is "one hundred twenty-one billion, five hundred four million, one hundred thirty-four thousand, two hundred forty-three".