102102123 has 16 divisors (see below), whose sum is σ = 137719296. Its totient is φ = 67281600.

The previous prime is 102102109. The next prime is 102102139. The reversal of 102102123 is 321201201.

It is not a de Polignac number, because 102102123 - 2²⁴ = 85324907 is a prime.

It is a super-2 number, since 2×102102123² = 20849687042214258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102102099 and 102102108.

It is not an unprimeable number, because it can be changed into a prime (102102163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118711 + ... + 119567.

It is an arithmetic number, because the mean of its divisors is an integer number (8607456).

Almost surely, 2^102102123 is an apocalyptic number.

102102123 is a deficient number, since it is larger than the sum of its proper divisors (35617173).

102102123 is a wasteful number, since it uses less digits than its factorization.

102102123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 102102123 is about 10104.5595153871. The cubic root of 102102123 is about 467.3887529246.

Adding to 102102123 its reverse (321201201), we get a palindrome (423303324).

The spelling of 102102123 in words is "one hundred two million, one hundred two thousand, one hundred twenty-three".