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120868345 = 5131859513
BaseRepresentation
bin1110011010001…
…00110111111001
322102102202012101
413031010313321
5221420241340
615554343401
72665235563
oct715046771
9272382171
10120868345
11622551a4
123458ab61
131c06c240
14120a4333
15a927c9a
hex7344df9

120868345 has 8 divisors (see below), whose sum is σ = 156199176. Its totient is φ = 89256576.

The previous prime is 120868343. The next prime is 120868357. The reversal of 120868345 is 543868021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 110224 + 120758121 = 332^2 + 10989^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120868345 - 21 = 120868343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120868343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929692 + ... + 929821.

It is an arithmetic number, because the mean of its divisors is an integer number (19524897).

Almost surely, 2120868345 is an apocalyptic number.

It is an amenable number.

120868345 is a deficient number, since it is larger than the sum of its proper divisors (35330831).

120868345 is a wasteful number, since it uses less digits than its factorization.

120868345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859531.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 120868345 is about 10994.0140531109. The cubic root of 120868345 is about 494.4292915816.

The spelling of 120868345 in words is "one hundred twenty million, eight hundred sixty-eight thousand, three hundred forty-five".

Divisors: 1 5 13 65 1859513 9297565 24173669 120868345