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142108195 = 528421639
BaseRepresentation
bin10000111100001…
…10011000100011
3100220101211210111
420132012120203
5242334430240
622033512151
73343620415
oct1036063043
9326354714
10142108195
1173241a99
123b712657
1323597ab8
1414c329b5
15c7211ea
hex8786623

142108195 has 4 divisors (see below), whose sum is σ = 170529840. Its totient is φ = 113686552.

The previous prime is 142108189. The next prime is 142108199. The reversal of 142108195 is 591801241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142108195 - 27 = 142108067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142108199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14210815 + ... + 14210824.

It is an arithmetic number, because the mean of its divisors is an integer number (42632460).

Almost surely, 2142108195 is an apocalyptic number.

142108195 is a deficient number, since it is larger than the sum of its proper divisors (28421645).

142108195 is an equidigital number, since it uses as much as digits as its factorization.

142108195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28421644.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 142108195 is about 11920.9141847427. The cubic root of 142108195 is about 521.8428143943.

The spelling of 142108195 in words is "one hundred forty-two million, one hundred eight thousand, one hundred ninety-five".

Divisors: 1 5 28421639 142108195