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142458 = 2323743
BaseRepresentation
bin100010110001111010
321020102020
4202301322
514024313
63015310
71132221
oct426172
9236366
10142458
1198038
126a536
134cac4
1439cb8
152c323
hex22c7a

142458 has 8 divisors (see below), whose sum is σ = 284928. Its totient is φ = 47484.

The previous prime is 142453. The next prime is 142469. The reversal of 142458 is 854241.

142458 is nontrivially palindromic in base 13.

142458 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

142458 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142453) 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, 11866 + ... + 11877.

It is an arithmetic number, because the mean of its divisors is an integer number (35616).

2142458 is an apocalyptic number.

142458 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

142458 is a wasteful number, since it uses less digits than its factorization.

142458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23748.

The product of its digits is 1280, while the sum is 24.

The square root of 142458 is about 377.4360873049. The cubic root of 142458 is about 52.2270642527.

Adding to 142458 its reverse (854241), we get a palindrome (996699).

The spelling of 142458 in words is "one hundred forty-two thousand, four hundred fifty-eight".

Divisors: 1 2 3 6 23743 47486 71229 142458