1242304123 has 8 divisors (see below), whose sum is σ = 1256017392. Its totient is φ = 1228609536.

The previous prime is 1242304109. The next prime is 1242304163. The reversal of 1242304123 is 3214032421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1242304123 - 2¹³ = 1242295931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242304094 and 1242304103.

It is not an unprimeable number, because it can be changed into a prime (1242304103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160836 + ... + 168382.

It is an arithmetic number, because the mean of its divisors is an integer number (157002174).

Almost surely, 2^1242304123 is an apocalyptic number.

1242304123 is a deficient number, since it is larger than the sum of its proper divisors (13713269).

1242304123 is an equidigital number, since it uses as much as digits as its factorization.

1242304123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9341.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1242304123 is about 35246.3348874745. The cubic root of 1242304123 is about 1075.0020906395.

Adding to 1242304123 its reverse (3214032421), we get a palindrome (4456336544).

The spelling of 1242304123 in words is "one billion, two hundred forty-two million, three hundred four thousand, one hundred twenty-three".