102143686 has 8 divisors (see below), whose sum is σ = 153269424. Its totient is φ = 51053880.

The previous prime is 102143663. The next prime is 102143693. The reversal of 102143686 is 686341201.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130 + ... + 14293.

It is an arithmetic number, because the mean of its divisors is an integer number (19158678).

Almost surely, 2^102143686 is an apocalyptic number.

102143686 is a deficient number, since it is larger than the sum of its proper divisors (51125738).

102143686 is a wasteful number, since it uses less digits than its factorization.

102143686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17966.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 102143686 is about 10106.6159519396. The cubic root of 102143686 is about 467.4521647416.

Adding to 102143686 its reverse (686341201), we get a palindrome (788484887).

The spelling of 102143686 in words is "one hundred two million, one hundred forty-three thousand, six hundred eighty-six".