121342205 has 8 divisors (see below), whose sum is σ = 145760472. Its totient is φ = 96973888.

The previous prime is 121342187. The next prime is 121342213. The reversal of 121342205 is 502243121.

It can be written as a sum of positive squares in 4 ways, for example, as 1811716 + 119530489 = 1346^2 + 10933^2 .

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 121342205 - 2⁸ = 121341949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6914 + ... + 17043.

It is an arithmetic number, because the mean of its divisors is an integer number (18220059).

Almost surely, 2^121342205 is an apocalyptic number.

It is an amenable number.

121342205 is a deficient number, since it is larger than the sum of its proper divisors (24418267).

121342205 is a wasteful number, since it uses less digits than its factorization.

121342205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24975.

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

The square root of 121342205 is about 11015.5437904808. The cubic root of 121342205 is about 495.0745797909.

Adding to 121342205 its reverse (502243121), we get a palindrome (623585326).

The spelling of 121342205 in words is "one hundred twenty-one million, three hundred forty-two thousand, two hundred five".