102018 has 24 divisors (see below), whose sum is σ = 238032. Its totient is φ = 29064.

The previous prime is 102013. The next prime is 102019. The reversal of 102018 is 810201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 101994 and 102012.

It is not an unprimeable number, because it can be changed into a prime (102013) by changing a digit.

102018 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121 + ... + 467.

It is an arithmetic number, because the mean of its divisors is an integer number (9918).

2¹⁰²⁰¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119016).

102018 is an abundant number, since it is smaller than the sum of its proper divisors (136014).

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

102018 is a wasteful number, since it uses less digits than its factorization.

102018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 102018 is about 319.4025673034. The cubic root of 102018 is about 46.7260355506.

Adding to 102018 its reverse (810201), we get a palindrome (912219).

The spelling of 102018 in words is "one hundred two thousand, eighteen".