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121342442341 = 618131963057
BaseRepresentation
bin111000100000010010…
…0101011101101100101
3102121012120012202012011
41301000210223231211
53442002131123331
6131424405354221
711523656512321
oct1610044535545
9377176182164
10121342442341
11475087109aa
121b625408971
13b59a362753
145c31754981
153252c7b3b1
hex1c4092bb65

121342442341 has 4 divisors (see below), whose sum is σ = 121344467212. Its totient is φ = 121340417472.

The previous prime is 121342442297. The next prime is 121342442401. The reversal of 121342442341 is 143244243121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114331896900 + 7010545441 = 338130^2 + 83729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-121342442341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121342440341) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 919716 + ... + 1043341.

It is an arithmetic number, because the mean of its divisors is an integer number (30336116803).

Almost surely, 2121342442341 is an apocalyptic number.

It is an amenable number.

121342442341 is a deficient number, since it is larger than the sum of its proper divisors (2024871).

121342442341 is an equidigital number, since it uses as much as digits as its factorization.

121342442341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024870.

The product of its digits is 18432, while the sum is 31.

Adding to 121342442341 its reverse (143244243121), we get a palindrome (264586685462).

The spelling of 121342442341 in words is "one hundred twenty-one billion, three hundred forty-two million, four hundred forty-two thousand, three hundred forty-one".

Divisors: 1 61813 1963057 121342442341