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142905484800 = 29325213372579
BaseRepresentation
bin1000010100010111010…
…1001010011000000000
3111122212022212210121100
42011011311022120000
54320132301003200
6145352212254400
713216221402321
oct2050565123000
9448768783540
10142905484800
1155673469951
1223842911400
1310625803380
146cb9470448
153ab5d45d00
hex2145d4a600

142905484800 has 720 divisors, whose sum is σ = 565863938640. Its totient is φ = 34212741120.

The previous prime is 142905484793. The next prime is 142905484817. The reversal of 142905484800 is 8484509241.

142905484800 is a `hidden beast` number, since 1 + 4 + 2 + 90 + 5 + 484 + 80 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 71 ways as a sum of consecutive naturals, for example, 55409911 + ... + 55412489.

It is an arithmetic number, because the mean of its divisors is an integer number (785922137).

Almost surely, 2142905484800 is an apocalyptic number.

142905484800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142905484800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282931969320).

142905484800 is an abundant number, since it is smaller than the sum of its proper divisors (422958453840).

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

142905484800 is a wasteful number, since it uses less digits than its factorization.

142905484800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663 (or 2639 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 142905484800 in words is "one hundred forty-two billion, nine hundred five million, four hundred eighty-four thousand, eight hundred".