1242434423 has 2 divisors, whose sum is σ = 1242434424. Its totient is φ = 1242434422.

The previous prime is 1242434371. The next prime is 1242434483. The reversal of 1242434423 is 3244342421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242434423 - 2¹⁶ = 1242368887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242434483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621217211 + 621217212.

It is an arithmetic number, because the mean of its divisors is an integer number (621217212).

Almost surely, 2^1242434423 is an apocalyptic number.

1242434423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242434423 is an equidigital number, since it uses as much as digits as its factorization.

1242434423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 29.

The square root of 1242434423 is about 35248.1832581482. The cubic root of 1242434423 is about 1075.0396734592.

Adding to 1242434423 its reverse (3244342421), we get a palindrome (4486776844).

The spelling of 1242434423 in words is "one billion, two hundred forty-two million, four hundred thirty-four thousand, four hundred twenty-three".