102002345 has 4 divisors (see below), whose sum is σ = 122402820. Its totient is φ = 81601872.

The previous prime is 102002333. The next prime is 102002359. The reversal of 102002345 is 543200201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543200201 = 17 ⋅31952953.

It can be written as a sum of positive squares in 2 ways, for example, as 37810201 + 64192144 = 6149^2 + 8012^2 .

It is a cyclic number.

It is not a de Polignac number, because 102002345 - 2⁶ = 102002281 is a prime.

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, 10200230 + ... + 10200239.

It is an arithmetic number, because the mean of its divisors is an integer number (30600705).

Almost surely, 2^102002345 is an apocalyptic number.

It is an amenable number.

102002345 is a deficient number, since it is larger than the sum of its proper divisors (20400475).

102002345 is an equidigital number, since it uses as much as digits as its factorization.

102002345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20400474.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 102002345 is about 10099.6210324942. The cubic root of 102002345 is about 467.2364533999.

Adding to 102002345 its reverse (543200201), we get a palindrome (645202546).

The spelling of 102002345 in words is "one hundred two million, two thousand, three hundred forty-five".