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208042 = 2104021
BaseRepresentation
bin110010110010101010
3101120101021
4302302222
523124132
64243054
71524352
oct626252
9346337
10208042
1113233a
12a048a
1373903
1455b62
1541997
hex32caa

208042 has 4 divisors (see below), whose sum is σ = 312066. Its totient is φ = 104020.

The previous prime is 208037. The next prime is 208049. The reversal of 208042 is 240802.

Adding to 208042 its reverse (240802), we get a palindrome (448844).

208042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240802 = 2120401.

It can be written as a sum of positive squares in only one way, i.e., 159201 + 48841 = 399^2 + 221^2 .

It is not an unprimeable number, because it can be changed into a prime (208049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52009 + ... + 52012.

2208042 is an apocalyptic number.

208042 is a deficient number, since it is larger than the sum of its proper divisors (104024).

208042 is a wasteful number, since it uses less digits than its factorization.

208042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104023.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 208042 is about 456.1162132615. The cubic root of 208042 is about 59.2539090752.

The spelling of 208042 in words is "two hundred eight thousand, forty-two".

Divisors: 1 2 104021 208042