121343239 has 8 divisors (see below), whose sum is σ = 130042080. Its totient is φ = 112929696.

The previous prime is 121343227. The next prime is 121343273. The reversal of 121343239 is 932343121.

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 121343239 - 2⁷ = 121343111 is a prime.

It is a super-2 number, since 2×121343239² = 29448363302022242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121343639) 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, 70444 + ... + 72145.

It is an arithmetic number, because the mean of its divisors is an integer number (16255260).

Almost surely, 2^121343239 is an apocalyptic number.

121343239 is a deficient number, since it is larger than the sum of its proper divisors (8698841).

121343239 is a wasteful number, since it uses less digits than its factorization.

121343239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142649.

The product of its digits is 3888, while the sum is 28.

The square root of 121343239 is about 11015.5907240601. The cubic root of 121343239 is about 495.0759860223.

The spelling of 121343239 in words is "one hundred twenty-one million, three hundred forty-three thousand, two hundred thirty-nine".