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142578467844 = 22311881538987
BaseRepresentation
bin1000010011001001010…
…1101100010000000100
3111122000112112121200020
42010302111230100010
54314000041432334
6145255531215140
713205140660161
oct2046225542004
9448015477606
10142578467844
11555159121aa
12237712a74b0
13105a2b36307
146c87c67068
153a9729be49
hex213256c404

142578467844 has 12 divisors (see below), whose sum is σ = 332683091664. Its totient is φ = 47526155944.

The previous prime is 142578467833. The next prime is 142578467861. The reversal of 142578467844 is 448764875241.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5940769482 + ... + 5940769505.

It is an arithmetic number, because the mean of its divisors is an integer number (27723590972).

Almost surely, 2142578467844 is an apocalyptic number.

It is an amenable number.

142578467844 is an abundant number, since it is smaller than the sum of its proper divisors (190104623820).

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

142578467844 is a wasteful number, since it uses less digits than its factorization.

142578467844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11881538994 (or 11881538992 counting only the distinct ones).

The product of its digits is 48168960, while the sum is 60.

The spelling of 142578467844 in words is "one hundred forty-two billion, five hundred seventy-eight million, four hundred sixty-seven thousand, eight hundred forty-four".

Divisors: 1 2 3 4 6 12 11881538987 23763077974 35644616961 47526155948 71289233922 142578467844