1242250134565 has 8 divisors (see below), whose sum is σ = 1626218358048. Its totient is φ = 903454643280.

The previous prime is 1242250134427. The next prime is 1242250134571. The reversal of 1242250134565 is 5654310522421.

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

It is not a de Polignac number, because 1242250134565 - 2¹³ = 1242250126373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11293182987 + ... + 11293183096.

It is an arithmetic number, because the mean of its divisors is an integer number (203277294756).

Almost surely, 2^{1242250134565} is an apocalyptic number.

It is an amenable number.

1242250134565 is a deficient number, since it is larger than the sum of its proper divisors (383968223483).

1242250134565 is a wasteful number, since it uses less digits than its factorization.

1242250134565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22586366099.

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 1242250134565 its reverse (5654310522421), we get a palindrome (6896560656986).

The spelling of 1242250134565 in words is "one trillion, two hundred forty-two billion, two hundred fifty million, one hundred thirty-four thousand, five hundred sixty-five".