102002 has 4 divisors (see below), whose sum is σ = 153006.
Its totient is φ = 51000.
The previous prime is 102001. The next prime is 102013. The reversal of 102002 is 200201.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 73441 + 28561 = 271^2 + 169^2
It is not an unprimeable number, because it can be changed into a prime (102001) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25499 + ... + 25502.
2102002 is an apocalyptic number.
102002 is a deficient number, since it is larger than the sum of its proper divisors (51004).
102002 is an equidigital number, since it uses as much as digits as its factorization.
102002 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 51003.
The product of its (nonzero) digits is 4, while the sum is 5.
The square root of 102002 is about 319.3775195595.
The cubic root of 102002 is about 46.7235926625.
Adding to 102002 its reverse (200201), we get a palindrome (302203).
Multiplying 102002 by its reverse (200201), we get a palindrome (20420902402).
The spelling of 102002 in words is "one hundred two thousand, two", and thus it is an iban number.