242261565 has 32 divisors (see below), whose sum is σ = 477071616. Its totient is φ = 102228480.

The previous prime is 242261557. The next prime is 242261567. The reversal of 242261565 is 565162242.

It is not a de Polignac number, because 242261565 - 2³ = 242261557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242261567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87376 + ... + 90105.

It is an arithmetic number, because the mean of its divisors is an integer number (14908488).

Almost surely, 2^242261565 is an apocalyptic number.

It is an amenable number.

242261565 is a deficient number, since it is larger than the sum of its proper divisors (234810051).

242261565 is a wasteful number, since it uses less digits than its factorization.

242261565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177509.

The product of its digits is 28800, while the sum is 33.

The square root of 242261565 is about 15564.7539331658. The cubic root of 242261565 is about 623.3924040282.

The spelling of 242261565 in words is "two hundred forty-two million, two hundred sixty-one thousand, five hundred sixty-five".