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42057552041 = 131561319681
BaseRepresentation
bin100111001010110100…
…110101000010101001
311000120001201000021122
4213022310311002221
51142113213131131
631153155145025
73016140202541
oct471264650251
9130501630248
1042057552041
111692243437a
128198ba5175
133c7342a58b
14206d968321
151162466d7b
hex9cad350a9

42057552041 has 4 divisors (see below), whose sum is σ = 42058003284. Its totient is φ = 42057100800.

The previous prime is 42057552023. The next prime is 42057552077. The reversal of 42057552041 is 14025575024.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9721960000 + 32335592041 = 98600^2 + 179821^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-42057552041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42057551992 and 42057552010.

It is not an unprimeable number, because it can be changed into a prime (42057552541) 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, 28280 + ... + 291401.

It is an arithmetic number, because the mean of its divisors is an integer number (10514500821).

Almost surely, 242057552041 is an apocalyptic number.

It is an amenable number.

42057552041 is a deficient number, since it is larger than the sum of its proper divisors (451243).

42057552041 is a wasteful number, since it uses less digits than its factorization.

42057552041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451242.

The product of its (nonzero) digits is 56000, while the sum is 35.

The spelling of 42057552041 in words is "forty-two billion, fifty-seven million, five hundred fifty-two thousand, forty-one".

Divisors: 1 131561 319681 42057552041