208142064 has 60 divisors (see below), whose sum is σ = 627322696. Its totient is φ = 64043136.

The previous prime is 208142063. The next prime is 208142069. The reversal of 208142064 is 460241802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208142063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53722 + ... + 57465.

Almost surely, 2^208142064 is an apocalyptic number.

208142064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

208142064 is an abundant number, since it is smaller than the sum of its proper divisors (419180632).

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

208142064 is a wasteful number, since it uses less digits than its factorization.

208142064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111214 (or 111205 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 208142064 is about 14427.1294442103. The cubic root of 208142064 is about 592.6340753036.

Adding to 208142064 its reverse (460241802), we get a palindrome (668383866).

The spelling of 208142064 in words is "two hundred eight million, one hundred forty-two thousand, sixty-four".