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142895 = 528579
BaseRepresentation
bin100010111000101111
321021000102
4202320233
514033040
63021315
71133414
oct427057
9237012
10142895
11983a5
126a83b
135006c
143a10b
152c515
hex22e2f

142895 has 4 divisors (see below), whose sum is σ = 171480. Its totient is φ = 114312.

The previous prime is 142873. The next prime is 142897. The reversal of 142895 is 598241.

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 142895 - 210 = 141871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142897) 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, 14285 + ... + 14294.

It is an arithmetic number, because the mean of its divisors is an integer number (42870).

2142895 is an apocalyptic number.

142895 is a deficient number, since it is larger than the sum of its proper divisors (28585).

142895 is an equidigital number, since it uses as much as digits as its factorization.

142895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28584.

The product of its digits is 2880, while the sum is 29.

The square root of 142895 is about 378.0145499845. The cubic root of 142895 is about 52.2804131449.

The spelling of 142895 in words is "one hundred forty-two thousand, eight hundred ninety-five".

Divisors: 1 5 28579 142895