1242006529 has 2 divisors, whose sum is σ = 1242006530. Its totient is φ = 1242006528.

The previous prime is 1242006511. The next prime is 1242006551. The reversal of 1242006529 is 9256002421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1173199504 + 68807025 = 34252^2 + 8295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242006529 - 2¹¹ = 1242004481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242006529.

It is not a weakly prime, because it can be changed into another prime (1242006589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621003264 + 621003265.

It is an arithmetic number, because the mean of its divisors is an integer number (621003265).

Almost surely, 2^1242006529 is an apocalyptic number.

It is an amenable number.

1242006529 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242006529 is an equidigital number, since it uses as much as digits as its factorization.

1242006529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1242006529 is about 35242.1130041886. The cubic root of 1242006529 is about 1074.9162448538.

The spelling of 1242006529 in words is "one billion, two hundred forty-two million, six thousand, five hundred twenty-nine".