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42785511492 = 2234997145209
BaseRepresentation
bin100111110110001101…
…110001100001000100
311002102210111011220210
4213312031301201010
51200111042331432
631353321555420
73043156563363
oct476615614104
9132383434823
1042785511492
1117166340059
128360945b70
13405b1a8c09
1420dc4dd7da
1511a630d8cc
hex9f6371844

42785511492 has 24 divisors (see below), whose sum is σ = 100032940000. Its totient is φ = 14233254336.

The previous prime is 42785511479. The next prime is 42785511493. The reversal of 42785511492 is 29411558724.

It is not an unprimeable number, because it can be changed into a prime (42785511493) 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 7 ways as a sum of consecutive naturals, for example, 3566617 + ... + 3578592.

Almost surely, 242785511492 is an apocalyptic number.

It is an amenable number.

42785511492 is an abundant number, since it is smaller than the sum of its proper divisors (57247428508).

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

42785511492 is a wasteful number, since it uses less digits than its factorization.

42785511492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7145715 (or 7145713 counting only the distinct ones).

The product of its digits is 806400, while the sum is 48.

The spelling of 42785511492 in words is "forty-two billion, seven hundred eighty-five million, five hundred eleven thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 12 499 998 1497 1996 2994 5988 7145209 14290418 21435627 28580836 42871254 85742508 3565459291 7130918582 10696377873 14261837164 21392755746 42785511492