103242123 has 12 divisors (see below), whose sum is σ = 150925320. Its totient is φ = 67998336.

The previous prime is 103242119. The next prime is 103242133. The reversal of 103242123 is 321242301.

It is not a de Polignac number, because 103242123 - 2² = 103242119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103242096 and 103242105.

It is not an unprimeable number, because it can be changed into a prime (103242103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68358 + ... + 69851.

It is an arithmetic number, because the mean of its divisors is an integer number (12577110).

Almost surely, 2^103242123 is an apocalyptic number.

103242123 is a deficient number, since it is larger than the sum of its proper divisors (47683197).

103242123 is a wasteful number, since it uses less digits than its factorization.

103242123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138298 (or 138295 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 103242123 is about 10160.8131072272. The cubic root of 103242123 is about 469.1218293469.

Adding to 103242123 its reverse (321242301), we get a palindrome (424484424).

The spelling of 103242123 in words is "one hundred three million, two hundred forty-two thousand, one hundred twenty-three".