102112123 has 4 divisors (see below), whose sum is σ = 102136240. Its totient is φ = 102088008.

The previous prime is 102112121. The next prime is 102112139. The reversal of 102112123 is 321211201.

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 102112123 - 2¹ = 102112121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102112121) 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, 3840 + ... + 14797.

It is an arithmetic number, because the mean of its divisors is an integer number (25534060).

Almost surely, 2^102112123 is an apocalyptic number.

102112123 is a deficient number, since it is larger than the sum of its proper divisors (24117).

102112123 is an equidigital number, since it uses as much as digits as its factorization.

102112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24116.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 102112123 is about 10105.0543293938. The cubic root of 102112123 is about 467.4040112915.

Adding to 102112123 its reverse (321211201), we get a palindrome (423323324).

It can be divided in two parts, 102 and 112123, that added together give a square (112225 = 335²).

The spelling of 102112123 in words is "one hundred two million, one hundred twelve thousand, one hundred twenty-three".