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142781018276 = 221317161516989
BaseRepresentation
bin1000010011111001101…
…0010111000010100100
3111122112122200020122002
42010332122113002210
54314403420041101
6145332004424432
713213150426211
oct2047632270244
9448478606562
10142781018276
115560a187356
12238090a8118
1310605aa4440
146ca6b10b08
153aa9e5bd6b
hex213e6970a4

142781018276 has 24 divisors (see below), whose sum is σ = 284915970360. Its totient is φ = 62022523392.

The previous prime is 142781018201. The next prime is 142781018297. The reversal of 142781018276 is 672810187241.

It can be written as a sum of positive squares in 4 ways, for example, as 3555021376 + 139225996900 = 59624^2 + 373130^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142781018276.

It is an unprimeable number.

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, 80757611 + ... + 80759378.

It is an arithmetic number, because the mean of its divisors is an integer number (11871498765).

Almost surely, 2142781018276 is an apocalyptic number.

It is an amenable number.

142781018276 is a deficient number, since it is larger than the sum of its proper divisors (142134952084).

142781018276 is a wasteful number, since it uses less digits than its factorization.

142781018276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161517023 (or 161517021 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 47.

The spelling of 142781018276 in words is "one hundred forty-two billion, seven hundred eighty-one million, eighteen thousand, two hundred seventy-six".

Divisors: 1 2 4 13 17 26 34 52 68 221 442 884 161516989 323033978 646067956 2099720857 2745788813 4199441714 5491577626 8398883428 10983155252 35695254569 71390509138 142781018276