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142807302 = 232113312179
BaseRepresentation
bin10001000001100…
…01000100000110
3100221201100210100
420200301010012
5243024313202
622100504530
73352561551
oct1040610406
9327640710
10142807302
117367a270
123b9ab146
1323781081
1414d75698
15c80d41c
hex8831106

142807302 has 48 divisors (see below), whose sum is σ = 338719680. Its totient is φ = 43124400.

The previous prime is 142807271. The next prime is 142807303. The reversal of 142807302 is 203708241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142807303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64449 + ... + 66627.

It is an arithmetic number, because the mean of its divisors is an integer number (7056660).

Almost surely, 2142807302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142807302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169359840).

142807302 is an abundant number, since it is smaller than the sum of its proper divisors (195912378).

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

142807302 is a wasteful number, since it uses less digits than its factorization.

142807302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529 (or 2526 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 142807302 is about 11950.2009188130. The cubic root of 142807302 is about 522.6971571922.

The spelling of 142807302 in words is "one hundred forty-two million, eight hundred seven thousand, three hundred two".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 198 331 662 993 1986 2179 2979 3641 4358 5958 6537 7282 10923 13074 19611 21846 23969 32769 39222 47938 65538 71907 143814 215721 431442 721249 1442498 2163747 4327494 6491241 7933739 12982482 15867478 23801217 47602434 71403651 142807302