1242011245 has 8 divisors (see below), whose sum is σ = 1578084984. Its totient is φ = 935161344.

The previous prime is 1242011233. The next prime is 1242011261. The reversal of 1242011245 is 5421102421.

It can be written as a sum of positive squares in 4 ways, for example, as 404371881 + 837639364 = 20109^2 + 28942^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1242011245 - 2⁵ = 1242011213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7305864 + ... + 7306033.

It is an arithmetic number, because the mean of its divisors is an integer number (197260623).

Almost surely, 2^1242011245 is an apocalyptic number.

It is an amenable number.

1242011245 is a deficient number, since it is larger than the sum of its proper divisors (336073739).

1242011245 is a wasteful number, since it uses less digits than its factorization.

1242011245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14611919.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1242011245 is about 35242.1799127126. The cubic root of 1242011245 is about 1074.9176053669.

Adding to 1242011245 its reverse (5421102421), we get a palindrome (6663113666).

The spelling of 1242011245 in words is "one billion, two hundred forty-two million, eleven thousand, two hundred forty-five".