1242111023 has 2 divisors, whose sum is σ = 1242111024. Its totient is φ = 1242111022.

The previous prime is 1242110999. The next prime is 1242111037. The reversal of 1242111023 is 3201112421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1242111023 - 2¹⁶ = 1242045487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1242110992 and 1242111010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242111043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621055511 + 621055512.

It is an arithmetic number, because the mean of its divisors is an integer number (621055512).

Almost surely, 2^1242111023 is an apocalyptic number.

1242111023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242111023 is an equidigital number, since it uses as much as digits as its factorization.

1242111023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1242111023 is about 35243.5954891098. The cubic root of 1242111023 is about 1074.9463893943.

Adding to 1242111023 its reverse (3201112421), we get a palindrome (4443223444).

The spelling of 1242111023 in words is "one billion, two hundred forty-two million, one hundred eleven thousand, twenty-three".