102239966 has 8 divisors (see below), whose sum is σ = 153422424. Its totient is φ = 51099160.

The previous prime is 102239947. The next prime is 102239971. The reversal of 102239966 is 669932201.

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, 3305 + ... + 14676.

It is an arithmetic number, because the mean of its divisors is an integer number (19177803).

Almost surely, 2^102239966 is an apocalyptic number.

102239966 is a deficient number, since it is larger than the sum of its proper divisors (51182458).

102239966 is a wasteful number, since it uses less digits than its factorization.

102239966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20826.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 102239966 is about 10111.3780465375. The cubic root of 102239966 is about 467.5989911149.

The spelling of 102239966 in words is "one hundred two million, two hundred thirty-nine thousand, nine hundred sixty-six".