102120123 has 8 divisors (see below), whose sum is σ = 155611648. Its totient is φ = 58354344.

The previous prime is 102120101. The next prime is 102120131. The reversal of 102120123 is 321021201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102120123 - 2⁶ = 102120059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102120099 and 102120108.

It is not an unprimeable number, because it can be changed into a prime (102120323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2431411 + ... + 2431452.

It is an arithmetic number, because the mean of its divisors is an integer number (19451456).

Almost surely, 2^102120123 is an apocalyptic number.

102120123 is a deficient number, since it is larger than the sum of its proper divisors (53491525).

102120123 is an equidigital number, since it uses as much as digits as its factorization.

102120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4862873.

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

The square root of 102120123 is about 10105.4501631545. The cubic root of 102120123 is about 467.4162172678.

Adding to 102120123 its reverse (321021201), we get a palindrome (423141324).

The spelling of 102120123 in words is "one hundred two million, one hundred twenty thousand, one hundred twenty-three".