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54123110421 = 3193221294793
BaseRepresentation
bin110010011001111111…
…010010000000010101
312011200221011212211020
4302121333102000111
51341321004013141
640510330031353
73624135563562
oct623177220025
9164627155736
1054123110421
1120a540a2a26
12a5a5878559
135147037033
14289616d869
15161b837266
hexc99fd2015

54123110421 has 16 divisors (see below), whose sum is σ = 75986101440. Its totient is φ = 34172288640.

The previous prime is 54123110417. The next prime is 54123110429. The reversal of 54123110421 is 12401132145.

It is not a de Polignac number, because 54123110421 - 22 = 54123110417 is a prime.

It is a super-2 number, since 2×541231104212 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54123110391 and 54123110400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54123110429) 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 15 ways as a sum of consecutive naturals, for example, 36201 + ... + 330993.

It is an arithmetic number, because the mean of its divisors is an integer number (4749131340).

Almost surely, 254123110421 is an apocalyptic number.

It is an amenable number.

54123110421 is a deficient number, since it is larger than the sum of its proper divisors (21862991019).

54123110421 is a wasteful number, since it uses less digits than its factorization.

54123110421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298036.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 54123110421 its reverse (12401132145), we get a palindrome (66524242566).

The spelling of 54123110421 in words is "fifty-four billion, one hundred twenty-three million, one hundred ten thousand, four hundred twenty-one".

Divisors: 1 3 19 57 3221 9663 61199 183597 294793 884379 5601067 16803201 949528253 2848584759 18041036807 54123110421