242907645481 has 8 divisors (see below), whose sum is σ = 245193994760. Its totient is φ = 240622348032.

The previous prime is 242907645437. The next prime is 242907645521. The reversal of 242907645481 is 184546709242.

It can be written as a sum of positive squares in 4 ways, for example, as 11451456 + 242896194025 = 3384^2 + 492845^2 .

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 242907645481 - 2¹³ = 242907637289 is a prime.

It is a super-2 number, since 2×242907645481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242907645181) by changing a digit.

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, 204991 + ... + 726523.

It is an arithmetic number, because the mean of its divisors is an integer number (30649249345).

Almost surely, 2^242907645481 is an apocalyptic number.

It is an amenable number.

242907645481 is a deficient number, since it is larger than the sum of its proper divisors (2286349279).

242907645481 is a wasteful number, since it uses less digits than its factorization.

242907645481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525915.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 242907645481 in words is "two hundred forty-two billion, nine hundred seven million, six hundred forty-five thousand, four hundred eighty-one".