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142885857459 = 3571267731159
BaseRepresentation
bin1000010100010010101…
…0010010100010110011
3111122210221221121221210
42011010222102202303
54320112234414314
6145350231451203
713215562514622
oct2050452224263
9448727847853
10142885857459
1155663383604
1223838226b03
1310621720767
146cb6a016b9
153ab426a559
hex2144a928b3

142885857459 has 16 divisors (see below), whose sum is σ = 190925546240. Its totient is φ = 95051841120.

The previous prime is 142885857403. The next prime is 142885857473. The reversal of 142885857459 is 954758588241.

It is not a de Polignac number, because 142885857459 - 217 = 142885726387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142885857459.

It is not an unprimeable number, because it can be changed into a prime (142885853459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4570122 + ... + 4601280.

It is an arithmetic number, because the mean of its divisors is an integer number (11932846640).

Almost surely, 2142885857459 is an apocalyptic number.

142885857459 is a deficient number, since it is larger than the sum of its proper divisors (48039688781).

142885857459 is a wasteful number, since it uses less digits than its factorization.

142885857459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34410.

The product of its digits is 129024000, while the sum is 66.

The spelling of 142885857459 in words is "one hundred forty-two billion, eight hundred eighty-five million, eight hundred fifty-seven thousand, four hundred fifty-nine".

Divisors: 1 3 571 1713 2677 8031 31159 93477 1528567 4585701 17791789 53375367 83412643 250237929 47628619153 142885857459