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140842 = 2135417
BaseRepresentation
bin100010011000101010
321011012101
4202120222
514001332
63004014
71124422
oct423052
9234171
10140842
11968a9
126960a
134c150
1439482
152bae7
hex2262a

140842 has 8 divisors (see below), whose sum is σ = 227556. Its totient is φ = 64992.

The previous prime is 140839. The next prime is 140863. The reversal of 140842 is 248041.

It can be written as a sum of positive squares in 2 ways, for example, as 114921 + 25921 = 339^2 + 161^2 .

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

It is an unprimeable number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2683 + ... + 2734.

2140842 is an apocalyptic number.

140842 is a deficient number, since it is larger than the sum of its proper divisors (86714).

140842 is a wasteful number, since it uses less digits than its factorization.

140842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 140842 is about 375.2892218010. The cubic root of 140842 is about 52.0288301667.

Adding to 140842 its reverse (248041), we get a palindrome (388883).

The spelling of 140842 in words is "one hundred forty thousand, eight hundred forty-two".

Divisors: 1 2 13 26 5417 10834 70421 140842