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42012918751 = 353753715791
BaseRepresentation
bin100111001000001010…
…100100001111011111
311000102221201101220211
4213020022210033133
51142020301400001
631144522353251
73015055626406
oct471012441737
9130387641824
1042012918751
11168aa219761
12818605b827
133c67100b4b
142067a6a63d
15115d59c351
hex9c82a43df

42012918751 has 8 divisors (see below), whose sum is σ = 42140193984. Its totient is φ = 41885690880.

The previous prime is 42012918691. The next prime is 42012918803. The reversal of 42012918751 is 15781921024.

42012918751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42012918751 - 29 = 42012918239 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 (42012918151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2652666 + ... + 2668456.

It is an arithmetic number, because the mean of its divisors is an integer number (5267524248).

Almost surely, 242012918751 is an apocalyptic number.

42012918751 is a deficient number, since it is larger than the sum of its proper divisors (127275233).

42012918751 is a wasteful number, since it uses less digits than its factorization.

42012918751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23681.

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 42012918751 in words is "forty-two billion, twelve million, nine hundred eighteen thousand, seven hundred fifty-one".

Divisors: 1 353 7537 15791 2660561 5574223 119016767 42012918751