242042540431 has 4 divisors (see below), whose sum is σ = 244392468112. Its totient is φ = 239692612752.

The previous prime is 242042540393. The next prime is 242042540437. The reversal of 242042540431 is 134045240242.

242042540431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 242042540431 - 2⁷ = 242042540303 is a prime.

It is a super-2 number, since 2×242042540431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242042540393 and 242042540402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242042540437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174963686 + ... + 1174963891.

It is an arithmetic number, because the mean of its divisors is an integer number (61098117028).

Almost surely, 2^242042540431 is an apocalyptic number.

242042540431 is a deficient number, since it is larger than the sum of its proper divisors (2349927681).

242042540431 is a wasteful number, since it uses less digits than its factorization.

242042540431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2349927680.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 242042540431 its reverse (134045240242), we get a palindrome (376087780673).

The spelling of 242042540431 in words is "two hundred forty-two billion, forty-two million, five hundred forty thousand, four hundred thirty-one".