121505343 has 8 divisors (see below), whose sum is σ = 169051008. Its totient is φ = 77481624.

The previous prime is 121505333. The next prime is 121505347. The reversal of 121505343 is 343505121.

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

It is not a de Polignac number, because 121505343 - 2¹⁰ = 121504319 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121505347) 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, 880405 + ... + 880542.

It is an arithmetic number, because the mean of its divisors is an integer number (21131376).

Almost surely, 2^121505343 is an apocalyptic number.

121505343 is a deficient number, since it is larger than the sum of its proper divisors (47545665).

121505343 is a wasteful number, since it uses less digits than its factorization.

121505343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760973.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 121505343 is about 11022.9462032616. The cubic root of 121505343 is about 495.2963473913.

The spelling of 121505343 in words is "one hundred twenty-one million, five hundred five thousand, three hundred forty-three".