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142287 = 3431103
BaseRepresentation
bin100010101111001111
321020011220
4202233033
514023122
63014423
71131555
oct425717
9236156
10142287
11979a2
126a413
134c9c2
1439bd5
152c25c
hex22bcf

142287 has 8 divisors (see below), whose sum is σ = 194304. Its totient is φ = 92568.

The previous prime is 142271. The next prime is 142297. The reversal of 142287 is 782241.

Adding to 142287 its sum of digits (24), we get a triangular number (142311 = T533).

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

It is not a de Polignac number, because 142287 - 24 = 142271 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142287.

It is not an unprimeable number, because it can be changed into a prime (142217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423 + ... + 680.

It is an arithmetic number, because the mean of its divisors is an integer number (24288).

2142287 is an apocalyptic number.

142287 is a deficient number, since it is larger than the sum of its proper divisors (52017).

142287 is a wasteful number, since it uses less digits than its factorization.

142287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149.

The product of its digits is 896, while the sum is 24.

The square root of 142287 is about 377.2094908668. The cubic root of 142287 is about 52.2061589010.

The spelling of 142287 in words is "one hundred forty-two thousand, two hundred eighty-seven".

Divisors: 1 3 43 129 1103 3309 47429 142287