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128466342 = 23212756197
BaseRepresentation
bin1111010100000…
…11110110100110
322221201202200200
413222003312212
5230341410332
620425251330
73116642304
oct752036646
9287652620
10128466342
1166574734
1237033b46
13207cc6b4
14130c1274
15b42917c
hex7a83da6

128466342 has 24 divisors (see below), whose sum is σ = 280540416. Its totient is φ = 42484176.

The previous prime is 128466323. The next prime is 128466343. The reversal of 128466342 is 243664821.

128466342 is a `hidden beast` number, since 12 + 8 + 4 + 6 + 634 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 128466297 and 128466306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128466343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25813 + ... + 30384.

It is an arithmetic number, because the mean of its divisors is an integer number (11689184).

Almost surely, 2128466342 is an apocalyptic number.

128466342 is an abundant number, since it is smaller than the sum of its proper divisors (152074074).

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

128466342 is a wasteful number, since it uses less digits than its factorization.

128466342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56332 (or 56329 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 128466342 is about 11334.2993607898. The cubic root of 128466342 is about 504.5797137062.

The spelling of 128466342 in words is "one hundred twenty-eight million, four hundred sixty-six thousand, three hundred forty-two".

Divisors: 1 2 3 6 9 18 127 254 381 762 1143 2286 56197 112394 168591 337182 505773 1011546 7137019 14274038 21411057 42822114 64233171 128466342