1242241565 has 16 divisors (see below), whose sum is σ = 1572696000. Its totient is φ = 939359232.

The previous prime is 1242241549. The next prime is 1242241591. The reversal of 1242241565 is 5651422421.

It is a cyclic number.

It is not a de Polignac number, because 1242241565 - 2⁴ = 1242241549 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 28094 + ... + 57216.

It is an arithmetic number, because the mean of its divisors is an integer number (98293500).

Almost surely, 2^1242241565 is an apocalyptic number.

It is an amenable number.

1242241565 is a deficient number, since it is larger than the sum of its proper divisors (330454435).

1242241565 is a wasteful number, since it uses less digits than its factorization.

1242241565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29596.

The product of its digits is 19200, while the sum is 32.

The square root of 1242241565 is about 35245.4474365130. The cubic root of 1242241565 is about 1074.9840459143.

Adding to 1242241565 its reverse (5651422421), we get a palindrome (6893663986).

The spelling of 1242241565 in words is "one billion, two hundred forty-two million, two hundred forty-one thousand, five hundred sixty-five".