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123442114405 = 5100924468209
BaseRepresentation
bin111001011110110111…
…0010010111101100101
3102210121220010010210011
41302331232102331211
54010302140130110
6132413012530221
711630003442241
oct1627556227545
9383556103704
10123442114405
1148395945675
121bb10620971
13b84336725c
145d90557421
15332727b48a
hex1cbdb92f65

123442114405 has 8 divisors (see below), whose sum is σ = 148277352600. Its totient is φ = 98655814656.

The previous prime is 123442114403. The next prime is 123442114409. The reversal of 123442114405 is 504411244321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9467679204 + 113974435201 = 97302^2 + 337601^2 .

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 123442114405 - 21 = 123442114403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123442114403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12229060 + ... + 12239149.

It is an arithmetic number, because the mean of its divisors is an integer number (18534669075).

Almost surely, 2123442114405 is an apocalyptic number.

It is an amenable number.

123442114405 is a deficient number, since it is larger than the sum of its proper divisors (24835238195).

123442114405 is a wasteful number, since it uses less digits than its factorization.

123442114405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24469223.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 123442114405 its reverse (504411244321), we get a palindrome (627853358726).

The spelling of 123442114405 in words is "one hundred twenty-three billion, four hundred forty-two million, one hundred fourteen thousand, four hundred five".

Divisors: 1 5 1009 5045 24468209 122341045 24688422881 123442114405