242103123 has 6 divisors (see below), whose sum is σ = 349704524. Its totient is φ = 161402076.

The previous prime is 242103119. The next prime is 242103131. The reversal of 242103123 is 321301242.

It is not a de Polignac number, because 242103123 - 2² = 242103119 is a prime.

It is a super-2 number, since 2×242103123² = 117227844332706258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242103096 and 242103105.

It is not an unprimeable number, because it can be changed into a prime (242103143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13450165 + ... + 13450182.

Almost surely, 2^242103123 is an apocalyptic number.

242103123 is a deficient number, since it is larger than the sum of its proper divisors (107601401).

242103123 is a wasteful number, since it uses less digits than its factorization.

242103123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26900353 (or 26900350 counting only the distinct ones).

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

The square root of 242103123 is about 15559.6633318334. The cubic root of 242103123 is about 623.2564723275.

Adding to 242103123 its reverse (321301242), we get a palindrome (563404365).

The spelling of 242103123 in words is "two hundred forty-two million, one hundred three thousand, one hundred twenty-three".