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12542417124 = 2231975305591
BaseRepresentation
bin10111010111001011…
…00001100011100100
31012101002202210202120
423223211201203210
5201141324321444
65432323305540
7622545533526
oct135345414344
935332683676
1012542417124
11535695a696
12252051b2b0
13124b64b6c3
1486da95a16
154d61b6b19
hex2eb9618e4

12542417124 has 24 divisors (see below), whose sum is σ = 29414202048. Its totient is φ = 4159582560.

The previous prime is 12542417113. The next prime is 12542417149. The reversal of 12542417124 is 42171424521.

12542417124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2650432 + ... + 2655159.

It is an arithmetic number, because the mean of its divisors is an integer number (1225591752).

Almost surely, 212542417124 is an apocalyptic number.

It is an amenable number.

12542417124 is an abundant number, since it is smaller than the sum of its proper divisors (16871784924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12542417124 is a wasteful number, since it uses less digits than its factorization.

12542417124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305795 (or 5305793 counting only the distinct ones).

The product of its digits is 17920, while the sum is 33.

The spelling of 12542417124 in words is "twelve billion, five hundred forty-two million, four hundred seventeen thousand, one hundred twenty-four".

Divisors: 1 2 3 4 6 12 197 394 591 788 1182 2364 5305591 10611182 15916773 21222364 31833546 63667092 1045201427 2090402854 3135604281 4180805708 6271208562 12542417124