242321123 has 16 divisors (see below), whose sum is σ = 276417792. Its totient is φ = 210276000.

The previous prime is 242321113. The next prime is 242321147. The reversal of 242321123 is 321123242.

It is not a de Polignac number, because 242321123 - 2¹² = 242317027 is a prime.

It is a super-2 number, since 2×242321123² = 117439053303962258, 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 = 242321095 and 242321104.

It is not an unprimeable number, because it can be changed into a prime (242321113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204593 + ... + 205773.

It is an arithmetic number, because the mean of its divisors is an integer number (17276112).

Almost surely, 2^242321123 is an apocalyptic number.

242321123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

242321123 is a deficient number, since it is larger than the sum of its proper divisors (34096669).

242321123 is a wasteful number, since it uses less digits than its factorization.

242321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026.

The product of its digits is 576, while the sum is 20.

The square root of 242321123 is about 15566.6670485368. The cubic root of 242321123 is about 623.4434851296.

Adding to 242321123 its reverse (321123242), we get a palindrome (563444365).

The spelling of 242321123 in words is "two hundred forty-two million, three hundred twenty-one thousand, one hundred twenty-three".