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42752131007 = 77041554927
BaseRepresentation
bin100111110100001110…
…011011111110111111
311002100110200021111112
4213310032123332333
51200024021143012
631350130312235
73042303055235
oct476416337677
9132313607445
1042752131007
1117149510883
12835172867b
1340542bc351
1420d7cd0955
1511a3418122
hex9f439bfbf

42752131007 has 4 divisors (see below), whose sum is σ = 42752762976. Its totient is φ = 42751499040.

The previous prime is 42752130979. The next prime is 42752131013. The reversal of 42752131007 is 70013125724.

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

It is a cyclic number.

It is not a de Polignac number, because 42752131007 - 26 = 42752130943 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 (42752131057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200423 + ... + 354504.

It is an arithmetic number, because the mean of its divisors is an integer number (10688190744).

Almost surely, 242752131007 is an apocalyptic number.

42752131007 is a deficient number, since it is larger than the sum of its proper divisors (631969).

42752131007 is an equidigital number, since it uses as much as digits as its factorization.

42752131007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631968.

The product of its (nonzero) digits is 11760, while the sum is 32.

The spelling of 42752131007 in words is "forty-two billion, seven hundred fifty-two million, one hundred thirty-one thousand, seven".

Divisors: 1 77041 554927 42752131007