102642 has 8 divisors (see below), whose sum is σ = 205296. Its totient is φ = 34212.

The previous prime is 102611. The next prime is 102643. The reversal of 102642 is 246201.

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

102642 is an admirable number.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (102643) by changing a digit.

102642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8548 + ... + 8559.

It is an arithmetic number, because the mean of its divisors is an integer number (25662).

2¹⁰²⁶⁴² is an apocalyptic number.

102642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

102642 is a wasteful number, since it uses less digits than its factorization.

102642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17112.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 102642 is about 320.3779018597. The cubic root of 102642 is about 46.8211096236.

Adding to 102642 its reverse (246201), we get a palindrome (348843).

The spelling of 102642 in words is "one hundred two thousand, six hundred forty-two".