1242522306 has 24 divisors (see below), whose sum is σ = 2717295984. Its totient is φ = 410302680.

The previous prime is 1242522289. The next prime is 1242522311. The reversal of 1242522306 is 6032252421.

It is a happy number.

1242522306 is a `hidden beast` number, since 1 + 2 + 425 + 2 + 230 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1242522306.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 320640 + ... + 324491.

It is an arithmetic number, because the mean of its divisors is an integer number (113220666).

Almost surely, 2^1242522306 is an apocalyptic number.

1242522306 is an abundant number, since it is smaller than the sum of its proper divisors (1474773678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242522306 is a wasteful number, since it uses less digits than its factorization.

1242522306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645246 (or 645243 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1242522306 is about 35249.4298677298. The cubic root of 1242522306 is about 1075.0650203326.

Adding to 1242522306 its reverse (6032252421), we get a palindrome (7274774727).

The spelling of 1242522306 in words is "one billion, two hundred forty-two million, five hundred twenty-two thousand, three hundred six".