123102 has 24 divisors (see below), whose sum is σ = 305136. Its totient is φ = 35136.

The previous prime is 123091. The next prime is 123113. The reversal of 123102 is 201321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123091) and next prime (123113).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

123102 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 11 ways as a sum of consecutive naturals, for example, 363 + ... + 614.

It is an arithmetic number, because the mean of its divisors is an integer number (12714).

2¹²³¹⁰² is an apocalyptic number.

123102 is an abundant number, since it is smaller than the sum of its proper divisors (182034).

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

123102 is a wasteful number, since it uses less digits than its factorization.

123102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 989 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 123102 is about 350.8589460168. The cubic root of 123102 is about 49.7456415633.

Adding to 123102 its reverse (201321), we get a palindrome (324423).

It can be divided in two parts, 123 and 102, that added together give a square (225 = 15²).

The spelling of 123102 in words is "one hundred twenty-three thousand, one hundred two", and thus it is an iban number.