1242030529 has 2 divisors, whose sum is σ = 1242030530. Its totient is φ = 1242030528.

The previous prime is 1242030527. The next prime is 1242030539. The reversal of 1242030529 is 9250302421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 814988304 + 427042225 = 28548^2 + 20665^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242030529 - 2¹ = 1242030527 is a prime.

Together with 1242030527, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1242030497 and 1242030506.

It is not a weakly prime, because it can be changed into another prime (1242030527) 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, 621015264 + 621015265.

It is an arithmetic number, because the mean of its divisors is an integer number (621015265).

Almost surely, 2^1242030529 is an apocalyptic number.

It is an amenable number.

1242030529 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242030529 is an equidigital number, since it uses as much as digits as its factorization.

1242030529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1242030529 is about 35242.4535042610. The cubic root of 1242030529 is about 1074.9231685489.

The spelling of 1242030529 in words is "one billion, two hundred forty-two million, thirty thousand, five hundred twenty-nine".