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142750668 = 22311895889
BaseRepresentation
bin10001000001000…
…11001111001100
3100221121111002210
420200203033030
5243021010133
622055350420
73352234464
oct1040431714
9327544083
10142750668
1173640765
123b982410
1323761368
1414d5cba4
15c7eb763
hex88233cc

142750668 has 12 divisors (see below), whose sum is σ = 333084920. Its totient is φ = 47583552.

The previous prime is 142750633. The next prime is 142750679. The reversal of 142750668 is 866057241.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5947933 + ... + 5947956.

Almost surely, 2142750668 is an apocalyptic number.

It is an amenable number.

142750668 is an abundant number, since it is smaller than the sum of its proper divisors (190334252).

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

142750668 is a wasteful number, since it uses less digits than its factorization.

142750668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11895896 (or 11895894 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 142750668 is about 11947.8311002458. The cubic root of 142750668 is about 522.6280516109.

The spelling of 142750668 in words is "one hundred forty-two million, seven hundred fifty thousand, six hundred sixty-eight".

Divisors: 1 2 3 4 6 12 11895889 23791778 35687667 47583556 71375334 142750668