242040343513 has 4 divisors (see below), whose sum is σ = 242297560548. Its totient is φ = 241783126480.

The previous prime is 242040343507. The next prime is 242040343609. The reversal of 242040343513 is 315343040242.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 201418747209 + 40621596304 = 448797^2 + 201548^2 .

It is a cyclic number.

It is not a de Polignac number, because 242040343513 - 2³³ = 233450408921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242040343613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128607106 + ... + 128608987.

It is an arithmetic number, because the mean of its divisors is an integer number (60574390137).

Almost surely, 2^242040343513 is an apocalyptic number.

It is an amenable number.

242040343513 is a deficient number, since it is larger than the sum of its proper divisors (257217035).

242040343513 is an equidigital number, since it uses as much as digits as its factorization.

242040343513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257217034.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 242040343513 its reverse (315343040242), we get a palindrome (557383383755).

The spelling of 242040343513 in words is "two hundred forty-two billion, forty million, three hundred forty-three thousand, five hundred thirteen".