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86542 = 243271
BaseRepresentation
bin10101001000001110
311101201021
4111020032
510232132
61504354
7510211
oct251016
9141637
1086542
115a025
12420ba
1330511
1423778
151a997
hex1520e

86542 has 4 divisors (see below), whose sum is σ = 129816. Its totient is φ = 43270.

The previous prime is 86539. The next prime is 86561. The reversal of 86542 is 24568.

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

It is a plaindrome in base 14.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21634 + ... + 21637.

It is an arithmetic number, because the mean of its divisors is an integer number (32454).

286542 is an apocalyptic number.

86542 is a deficient number, since it is larger than the sum of its proper divisors (43274).

86542 is a wasteful number, since it uses less digits than its factorization.

86542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43273.

The product of its digits is 1920, while the sum is 25.

The square root of 86542 is about 294.1802168739. The cubic root of 86542 is about 44.2325838236.

The spelling of 86542 in words is "eighty-six thousand, five hundred forty-two".

Divisors: 1 2 43271 86542