102320123 has 4 divisors (see below), whose sum is σ = 106768848. Its totient is φ = 97871400.

The previous prime is 102320107. The next prime is 102320129. The reversal of 102320123 is 321023201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102320123 - 2⁴ = 102320107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102320098 and 102320107.

It is not an unprimeable number, because it can be changed into a prime (102320129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2224328 + ... + 2224373.

It is an arithmetic number, because the mean of its divisors is an integer number (26692212).

Almost surely, 2^102320123 is an apocalyptic number.

102320123 is a deficient number, since it is larger than the sum of its proper divisors (4448725).

102320123 is an equidigital number, since it uses as much as digits as its factorization.

102320123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448724.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 102320123 is about 10115.3409729974. The cubic root of 102320123 is about 467.7211597177.

Adding to 102320123 its reverse (321023201), we get a palindrome (423343324).

The spelling of 102320123 in words is "one hundred two million, three hundred twenty thousand, one hundred twenty-three".