1242334427 has 2 divisors, whose sum is σ = 1242334428. Its totient is φ = 1242334426.

The previous prime is 1242334421. The next prime is 1242334477. The reversal of 1242334427 is 7244332421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242334427 - 2¹⁰ = 1242333403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1242334393 and 1242334402.

It is not a weakly prime, because it can be changed into another prime (1242334421) 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, 621167213 + 621167214.

It is an arithmetic number, because the mean of its divisors is an integer number (621167214).

Almost surely, 2^1242334427 is an apocalyptic number.

1242334427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242334427 is an equidigital number, since it uses as much as digits as its factorization.

1242334427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 32.

The square root of 1242334427 is about 35246.7647735221. The cubic root of 1242334427 is about 1075.0108315476.

Adding to 1242334427 its reverse (7244332421), we get a palindrome (8486666848).

The spelling of 1242334427 in words is "one billion, two hundred forty-two million, three hundred thirty-four thousand, four hundred twenty-seven".